Home / 20,070.42-30,130.11-19,277.61

Finding the Fourth Proportional to 20,070.42, 30,130.11 and 19,277.61

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Solution

The fourth proportional to 20,070.42, 30,130.11 and 19,277.61 is: 28,939.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.42 : 30,130.11 = 19,277.61 : x
  2. Step 2: Convert to fraction form
    20,070.42/30,130.11 = 19,277.61/x
  3. Step 3: Cross multiply
    20,070.42x = 30,130.11 × 19,277.61
  4. Step 4: Simplify right side
    20,070.42x = 580,836,509.84
  5. Step 5: Solve for x
    x = 580,836,509.84/20,070.42
  6. Step 6: Final answer
    x = 28,939.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.