Home / 15,276.50-21,082.40-8,564.28

Finding the Fourth Proportional to 15,276.50, 21,082.40 and 8,564.28

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Solution

The fourth proportional to 15,276.50, 21,082.40 and 8,564.28 is: 11,819.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,276.50 : 21,082.40 = 8,564.28 : x
  2. Step 2: Convert to fraction form
    15,276.50/21,082.40 = 8,564.28/x
  3. Step 3: Cross multiply
    15,276.50x = 21,082.40 × 8,564.28
  4. Step 4: Simplify right side
    15,276.50x = 180,555,598.08
  5. Step 5: Solve for x
    x = 180,555,598.08/15,276.50
  6. Step 6: Final answer
    x = 11,819.18

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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.