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Finding the Fourth Proportional to 39,980.88, 59,973.48 and 10,398.78

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Solution

The fourth proportional to 39,980.88, 59,973.48 and 10,398.78 is: 15,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,980.88 : 59,973.48 = 10,398.78 : x
  2. Step 2: Convert to fraction form
    39,980.88/59,973.48 = 10,398.78/x
  3. Step 3: Cross multiply
    39,980.88x = 59,973.48 × 10,398.78
  4. Step 4: Simplify right side
    39,980.88x = 623,651,024.35
  5. Step 5: Solve for x
    x = 623,651,024.35/39,980.88
  6. Step 6: Final answer
    x = 15,598.73

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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.