Home / 21,987.52-30,344.48-12,559.04

Finding the Fourth Proportional to 21,987.52, 30,344.48 and 12,559.04

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Solution

The fourth proportional to 21,987.52, 30,344.48 and 12,559.04 is: 17,332.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987.52 : 30,344.48 = 12,559.04 : x
  2. Step 2: Convert to fraction form
    21,987.52/30,344.48 = 12,559.04/x
  3. Step 3: Cross multiply
    21,987.52x = 30,344.48 × 12,559.04
  4. Step 4: Simplify right side
    21,987.52x = 381,097,538.10
  5. Step 5: Solve for x
    x = 381,097,538.10/21,987.52
  6. Step 6: Final answer
    x = 17,332.45

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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.