Home / 25,020.78-34,528.38-13,690.14

Finding the Fourth Proportional to 25,020.78, 34,528.38 and 13,690.14

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Solution

The fourth proportional to 25,020.78, 34,528.38 and 13,690.14 is: 18,892.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,020.78 : 34,528.38 = 13,690.14 : x
  2. Step 2: Convert to fraction form
    25,020.78/34,528.38 = 13,690.14/x
  3. Step 3: Cross multiply
    25,020.78x = 34,528.38 × 13,690.14
  4. Step 4: Simplify right side
    25,020.78x = 472,698,356.17
  5. Step 5: Solve for x
    x = 472,698,356.17/25,020.78
  6. Step 6: Final answer
    x = 18,892.23

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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.