Home / 15,440.28-21,307.04-8,725.76

Finding the Fourth Proportional to 15,440.28, 21,307.04 and 8,725.76

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Solution

The fourth proportional to 15,440.28, 21,307.04 and 8,725.76 is: 12,041.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.28 : 21,307.04 = 8,725.76 : x
  2. Step 2: Convert to fraction form
    15,440.28/21,307.04 = 8,725.76/x
  3. Step 3: Cross multiply
    15,440.28x = 21,307.04 × 8,725.76
  4. Step 4: Simplify right side
    15,440.28x = 185,920,126.99
  5. Step 5: Solve for x
    x = 185,920,126.99/15,440.28
  6. Step 6: Final answer
    x = 12,041.24

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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.