Home / 25,123.90-34,659-15,047.50

Finding the Fourth Proportional to 25,123.90, 34,659 and 15,047.50

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Solution

The fourth proportional to 25,123.90, 34,659 and 15,047.50 is: 20,758.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,123.90 : 34,659 = 15,047.50 : x
  2. Step 2: Convert to fraction form
    25,123.90/34,659 = 15,047.50/x
  3. Step 3: Cross multiply
    25,123.90x = 34,659 × 15,047.50
  4. Step 4: Simplify right side
    25,123.90x = 521,531,302.50
  5. Step 5: Solve for x
    x = 521,531,302.50/25,123.90
  6. Step 6: Final answer
    x = 20,758.37

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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.