Home / 28,403,947.20-42,584,925.60-15,638,865.60

Finding the Fourth Proportional to 28,403,947.20, 42,584,925.60 and 15,638,865.60

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Solution

The fourth proportional to 28,403,947.20, 42,584,925.60 and 15,638,865.60 is: 23,446,738.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403,947.20 : 42,584,925.60 = 15,638,865.60 : x
  2. Step 2: Convert to fraction form
    28,403,947.20/42,584,925.60 = 15,638,865.60/x
  3. Step 3: Cross multiply
    28,403,947.20x = 42,584,925.60 × 15,638,865.60
  4. Step 4: Simplify right side
    28,403,947.20x = 665,979,928,044,399.38
  5. Step 5: Solve for x
    x = 665,979,928,044,399.38/28,403,947.20
  6. Step 6: Final answer
    x = 23,446,738.70

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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.