Home / 25,409.18-38,137.17-12,938.18

Finding the Fourth Proportional to 25,409.18, 38,137.17 and 12,938.18

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Solution

The fourth proportional to 25,409.18, 38,137.17 and 12,938.18 is: 19,419.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,409.18 : 38,137.17 = 12,938.18 : x
  2. Step 2: Convert to fraction form
    25,409.18/38,137.17 = 12,938.18/x
  3. Step 3: Cross multiply
    25,409.18x = 38,137.17 × 12,938.18
  4. Step 4: Simplify right side
    25,409.18x = 493,425,379.46
  5. Step 5: Solve for x
    x = 493,425,379.46/25,409.18
  6. Step 6: Final answer
    x = 19,419.18

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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.