Home / 20,526.32-28,319.88-12,560.24

Finding the Fourth Proportional to 20,526.32, 28,319.88 and 12,560.24

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Solution

The fourth proportional to 20,526.32, 28,319.88 and 12,560.24 is: 17,329.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,526.32 : 28,319.88 = 12,560.24 : x
  2. Step 2: Convert to fraction form
    20,526.32/28,319.88 = 12,560.24/x
  3. Step 3: Cross multiply
    20,526.32x = 28,319.88 × 12,560.24
  4. Step 4: Simplify right side
    20,526.32x = 355,704,489.57
  5. Step 5: Solve for x
    x = 355,704,489.57/20,526.32
  6. Step 6: Final answer
    x = 17,329.19

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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.