Home / 10,781,806.80-16,128,473.40-9,720,123.60

Finding the Fourth Proportional to 10,781,806.80, 16,128,473.40 and 9,720,123.60

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Solution

The fourth proportional to 10,781,806.80, 16,128,473.40 and 9,720,123.60 is: 14,540,304.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781,806.80 : 16,128,473.40 = 9,720,123.60 : x
  2. Step 2: Convert to fraction form
    10,781,806.80/16,128,473.40 = 9,720,123.60/x
  3. Step 3: Cross multiply
    10,781,806.80x = 16,128,473.40 × 9,720,123.60
  4. Step 4: Simplify right side
    10,781,806.80x = 156,770,754,927,312.25
  5. Step 5: Solve for x
    x = 156,770,754,927,312.25/10,781,806.80
  6. Step 6: Final answer
    x = 14,540,304.59

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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.