Home / 20,781,414,820.40-28,678,578,176.93-12,208,202,804.19

Finding the Fourth Proportional to 20,781,414,820.40, 28,678,578,176.93 and 12,208,202,804.19

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Solution

The fourth proportional to 20,781,414,820.40, 28,678,578,176.93 and 12,208,202,804.19 is: 16,847,452,473.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,414,820.40 : 28,678,578,176.93 = 12,208,202,804.19 : x
  2. Step 2: Convert to fraction form
    20,781,414,820.40/28,678,578,176.93 = 12,208,202,804.19/x
  3. Step 3: Cross multiply
    20,781,414,820.40x = 28,678,578,176.93 × 12,208,202,804.19
  4. Step 4: Simplify right side
    20,781,414,820.40x = 350,113,898,519,717,937,152
  5. Step 5: Solve for x
    x = 350,113,898,519,717,937,152/20,781,414,820.40
  6. Step 6: Final answer
    x = 16,847,452,473.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.