Home / 25,478.13-38,203.15-13,645.77

Finding the Fourth Proportional to 25,478.13, 38,203.15 and 13,645.77

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Solution

The fourth proportional to 25,478.13, 38,203.15 and 13,645.77 is: 20,461.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,478.13 : 38,203.15 = 13,645.77 : x
  2. Step 2: Convert to fraction form
    25,478.13/38,203.15 = 13,645.77/x
  3. Step 3: Cross multiply
    25,478.13x = 38,203.15 × 13,645.77
  4. Step 4: Simplify right side
    25,478.13x = 521,311,398.18
  5. Step 5: Solve for x
    x = 521,311,398.18/25,478.13
  6. Step 6: Final answer
    x = 20,461.13

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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.