Home / 14,921.52-20,522.88-12,530.40

Finding the Fourth Proportional to 14,921.52, 20,522.88 and 12,530.40

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Solution

The fourth proportional to 14,921.52, 20,522.88 and 12,530.40 is: 17,234.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,921.52 : 20,522.88 = 12,530.40 : x
  2. Step 2: Convert to fraction form
    14,921.52/20,522.88 = 12,530.40/x
  3. Step 3: Cross multiply
    14,921.52x = 20,522.88 × 12,530.40
  4. Step 4: Simplify right side
    14,921.52x = 257,159,895.55
  5. Step 5: Solve for x
    x = 257,159,895.55/14,921.52
  6. Step 6: Final answer
    x = 17,234.16

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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.