Home / 28,057,859.20-42,012,139.20-17,905,513.60

Finding the Fourth Proportional to 28,057,859.20, 42,012,139.20 and 17,905,513.60

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Solution

The fourth proportional to 28,057,859.20, 42,012,139.20 and 17,905,513.60 is: 26,810,631.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,057,859.20 : 42,012,139.20 = 17,905,513.60 : x
  2. Step 2: Convert to fraction form
    28,057,859.20/42,012,139.20 = 17,905,513.60/x
  3. Step 3: Cross multiply
    28,057,859.20x = 42,012,139.20 × 17,905,513.60
  4. Step 4: Simplify right side
    28,057,859.20x = 752,248,929,810,693.25
  5. Step 5: Solve for x
    x = 752,248,929,810,693.25/28,057,859.20
  6. Step 6: Final answer
    x = 26,810,631.72

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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.