Home / 25,678.49-38,461.55-15,787.76

Finding the Fourth Proportional to 25,678.49, 38,461.55 and 15,787.76

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Solution

The fourth proportional to 25,678.49, 38,461.55 and 15,787.76 is: 23,647.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,678.49 : 38,461.55 = 15,787.76 : x
  2. Step 2: Convert to fraction form
    25,678.49/38,461.55 = 15,787.76/x
  3. Step 3: Cross multiply
    25,678.49x = 38,461.55 × 15,787.76
  4. Step 4: Simplify right side
    25,678.49x = 607,221,449.38
  5. Step 5: Solve for x
    x = 607,221,449.38/25,678.49
  6. Step 6: Final answer
    x = 23,647.09

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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.