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Finding the Fourth Proportional to 25,931.49, 38,898.87 and 8,403.09

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Solution

The fourth proportional to 25,931.49, 38,898.87 and 8,403.09 is: 12,605.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,931.49 : 38,898.87 = 8,403.09 : x
  2. Step 2: Convert to fraction form
    25,931.49/38,898.87 = 8,403.09/x
  3. Step 3: Cross multiply
    25,931.49x = 38,898.87 × 8,403.09
  4. Step 4: Simplify right side
    25,931.49x = 326,870,705.51
  5. Step 5: Solve for x
    x = 326,870,705.51/25,931.49
  6. Step 6: Final answer
    x = 12,605.16

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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.