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Finding the Fourth Proportional to 18,752.40, 25,878.20 and 10,368.90

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Solution

The fourth proportional to 18,752.40, 25,878.20 and 10,368.90 is: 14,309.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.40 : 25,878.20 = 10,368.90 : x
  2. Step 2: Convert to fraction form
    18,752.40/25,878.20 = 10,368.90/x
  3. Step 3: Cross multiply
    18,752.40x = 25,878.20 × 10,368.90
  4. Step 4: Simplify right side
    18,752.40x = 268,328,416.14
  5. Step 5: Solve for x
    x = 268,328,416.14/18,752.40
  6. Step 6: Final answer
    x = 14,309.02

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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.