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Finding the Fourth Proportional to 25,641.60, 35,332.92 and 18,916.60

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Solution

The fourth proportional to 25,641.60, 35,332.92 and 18,916.60 is: 26,066.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,641.60 : 35,332.92 = 18,916.60 : x
  2. Step 2: Convert to fraction form
    25,641.60/35,332.92 = 18,916.60/x
  3. Step 3: Cross multiply
    25,641.60x = 35,332.92 × 18,916.60
  4. Step 4: Simplify right side
    25,641.60x = 668,378,714.47
  5. Step 5: Solve for x
    x = 668,378,714.47/25,641.60
  6. Step 6: Final answer
    x = 26,066.19

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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.