Home / 25,420.79-38,115.78-11,378.19

Finding the Fourth Proportional to 25,420.79, 38,115.78 and 11,378.19

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Solution

The fourth proportional to 25,420.79, 38,115.78 and 11,378.19 is: 17,060.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,420.79 : 38,115.78 = 11,378.19 : x
  2. Step 2: Convert to fraction form
    25,420.79/38,115.78 = 11,378.19/x
  3. Step 3: Cross multiply
    25,420.79x = 38,115.78 × 11,378.19
  4. Step 4: Simplify right side
    25,420.79x = 433,688,586.84
  5. Step 5: Solve for x
    x = 433,688,586.84/25,420.79
  6. Step 6: Final answer
    x = 17,060.39

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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.