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Finding the Fourth Proportional to 15,581.16, 21,491.08 and 10,543.16

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Solution

The fourth proportional to 15,581.16, 21,491.08 and 10,543.16 is: 14,542.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.16 : 21,491.08 = 10,543.16 : x
  2. Step 2: Convert to fraction form
    15,581.16/21,491.08 = 10,543.16/x
  3. Step 3: Cross multiply
    15,581.16x = 21,491.08 × 10,543.16
  4. Step 4: Simplify right side
    15,581.16x = 226,583,907.69
  5. Step 5: Solve for x
    x = 226,583,907.69/15,581.16
  6. Step 6: Final answer
    x = 14,542.18

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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.