Home / 20,577,009.69-28,404,261.90-15,435,328.95

Finding the Fourth Proportional to 20,577,009.69, 28,404,261.90 and 15,435,328.95

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Solution

The fourth proportional to 20,577,009.69, 28,404,261.90 and 15,435,328.95 is: 21,306,746.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577,009.69 : 28,404,261.90 = 15,435,328.95 : x
  2. Step 2: Convert to fraction form
    20,577,009.69/28,404,261.90 = 15,435,328.95/x
  3. Step 3: Cross multiply
    20,577,009.69x = 28,404,261.90 × 15,435,328.95
  4. Step 4: Simplify right side
    20,577,009.69x = 438,429,126,008,451.94
  5. Step 5: Solve for x
    x = 438,429,126,008,451.94/20,577,009.69
  6. Step 6: Final answer
    x = 21,306,746.35

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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.