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Finding the Fourth Proportional to 18,747, 25,870.86 and 10,363.68

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Solution

The fourth proportional to 18,747, 25,870.86 and 10,363.68 is: 14,301.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747 : 25,870.86 = 10,363.68 : x
  2. Step 2: Convert to fraction form
    18,747/25,870.86 = 10,363.68/x
  3. Step 3: Cross multiply
    18,747x = 25,870.86 × 10,363.68
  4. Step 4: Simplify right side
    18,747x = 268,117,314.36
  5. Step 5: Solve for x
    x = 268,117,314.36/18,747
  6. Step 6: Final answer
    x = 14,301.88

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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.