Home / 25,787.79-35,583.96-15,712.57

Finding the Fourth Proportional to 25,787.79, 35,583.96 and 15,712.57

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Solution

The fourth proportional to 25,787.79, 35,583.96 and 15,712.57 is: 21,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,787.79 : 35,583.96 = 15,712.57 : x
  2. Step 2: Convert to fraction form
    25,787.79/35,583.96 = 15,712.57/x
  3. Step 3: Cross multiply
    25,787.79x = 35,583.96 × 15,712.57
  4. Step 4: Simplify right side
    25,787.79x = 559,115,462.38
  5. Step 5: Solve for x
    x = 559,115,462.38/25,787.79
  6. Step 6: Final answer
    x = 21,681.40

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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.