Home / 39,972.40-59,980.20-17,789.20

Finding the Fourth Proportional to 39,972.40, 59,980.20 and 17,789.20

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Solution

The fourth proportional to 39,972.40, 59,980.20 and 17,789.20 is: 26,693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,972.40 : 59,980.20 = 17,789.20 : x
  2. Step 2: Convert to fraction form
    39,972.40/59,980.20 = 17,789.20/x
  3. Step 3: Cross multiply
    39,972.40x = 59,980.20 × 17,789.20
  4. Step 4: Simplify right side
    39,972.40x = 1,066,999,773.84
  5. Step 5: Solve for x
    x = 1,066,999,773.84/39,972.40
  6. Step 6: Final answer
    x = 26,693.41

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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.