Home / 15,440.13-21,307.29-8,725.86

Finding the Fourth Proportional to 15,440.13, 21,307.29 and 8,725.86

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Solution

The fourth proportional to 15,440.13, 21,307.29 and 8,725.86 is: 12,041.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.13 : 21,307.29 = 8,725.86 : x
  2. Step 2: Convert to fraction form
    15,440.13/21,307.29 = 8,725.86/x
  3. Step 3: Cross multiply
    15,440.13x = 21,307.29 × 8,725.86
  4. Step 4: Simplify right side
    15,440.13x = 185,924,429.52
  5. Step 5: Solve for x
    x = 185,924,429.52/15,440.13
  6. Step 6: Final answer
    x = 12,041.64

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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.