Home / 25,528.18-38,299.54-18,515.20

Finding the Fourth Proportional to 25,528.18, 38,299.54 and 18,515.20

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Solution

The fourth proportional to 25,528.18, 38,299.54 and 18,515.20 is: 27,778.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,528.18 : 38,299.54 = 18,515.20 : x
  2. Step 2: Convert to fraction form
    25,528.18/38,299.54 = 18,515.20/x
  3. Step 3: Cross multiply
    25,528.18x = 38,299.54 × 18,515.20
  4. Step 4: Simplify right side
    25,528.18x = 709,123,643.01
  5. Step 5: Solve for x
    x = 709,123,643.01/25,528.18
  6. Step 6: Final answer
    x = 27,778.07

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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.