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Finding the Fourth Proportional to 23,987.80, 33,113.40 and 15,040.40

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Solution

The fourth proportional to 23,987.80, 33,113.40 and 15,040.40 is: 20,762.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,987.80 : 33,113.40 = 15,040.40 : x
  2. Step 2: Convert to fraction form
    23,987.80/33,113.40 = 15,040.40/x
  3. Step 3: Cross multiply
    23,987.80x = 33,113.40 × 15,040.40
  4. Step 4: Simplify right side
    23,987.80x = 498,038,781.36
  5. Step 5: Solve for x
    x = 498,038,781.36/23,987.80
  6. Step 6: Final answer
    x = 20,762.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.