Home / 20,559.64-28,344.08-13,002.20

Finding the Fourth Proportional to 20,559.64, 28,344.08 and 13,002.20

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Solution

The fourth proportional to 20,559.64, 28,344.08 and 13,002.20 is: 17,925.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.64 : 28,344.08 = 13,002.20 : x
  2. Step 2: Convert to fraction form
    20,559.64/28,344.08 = 13,002.20/x
  3. Step 3: Cross multiply
    20,559.64x = 28,344.08 × 13,002.20
  4. Step 4: Simplify right side
    20,559.64x = 368,535,396.98
  5. Step 5: Solve for x
    x = 368,535,396.98/20,559.64
  6. Step 6: Final answer
    x = 17,925.19

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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.