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Finding the Fourth Proportional to 18,870.84, 26,041.50 and 10,487.16

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Solution

The fourth proportional to 18,870.84, 26,041.50 and 10,487.16 is: 14,472.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.84 : 26,041.50 = 10,487.16 : x
  2. Step 2: Convert to fraction form
    18,870.84/26,041.50 = 10,487.16/x
  3. Step 3: Cross multiply
    18,870.84x = 26,041.50 × 10,487.16
  4. Step 4: Simplify right side
    18,870.84x = 273,101,377.14
  5. Step 5: Solve for x
    x = 273,101,377.14/18,870.84
  6. Step 6: Final answer
    x = 14,472.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.