Home / 25,442.79-38,187.47-12,971.76

Finding the Fourth Proportional to 25,442.79, 38,187.47 and 12,971.76

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Solution

The fourth proportional to 25,442.79, 38,187.47 and 12,971.76 is: 19,469.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,442.79 : 38,187.47 = 12,971.76 : x
  2. Step 2: Convert to fraction form
    25,442.79/38,187.47 = 12,971.76/x
  3. Step 3: Cross multiply
    25,442.79x = 38,187.47 × 12,971.76
  4. Step 4: Simplify right side
    25,442.79x = 495,358,695.85
  5. Step 5: Solve for x
    x = 495,358,695.85/25,442.79
  6. Step 6: Final answer
    x = 19,469.51

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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.