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Finding the Fourth Proportional to 18,581.40, 27,875.70 and 9,347.40

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Solution

The fourth proportional to 18,581.40, 27,875.70 and 9,347.40 is: 14,022.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.40 : 27,875.70 = 9,347.40 : x
  2. Step 2: Convert to fraction form
    18,581.40/27,875.70 = 9,347.40/x
  3. Step 3: Cross multiply
    18,581.40x = 27,875.70 × 9,347.40
  4. Step 4: Simplify right side
    18,581.40x = 260,565,318.18
  5. Step 5: Solve for x
    x = 260,565,318.18/18,581.40
  6. Step 6: Final answer
    x = 14,022.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.