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Finding the Fourth Proportional to 13,547.92, 18,697.68 and 7,581.10

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Solution

The fourth proportional to 13,547.92, 18,697.68 and 7,581.10 is: 10,462.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,547.92 : 18,697.68 = 7,581.10 : x
  2. Step 2: Convert to fraction form
    13,547.92/18,697.68 = 7,581.10/x
  3. Step 3: Cross multiply
    13,547.92x = 18,697.68 × 7,581.10
  4. Step 4: Simplify right side
    13,547.92x = 141,748,981.85
  5. Step 5: Solve for x
    x = 141,748,981.85/13,547.92
  6. Step 6: Final answer
    x = 10,462.79

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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.