Home / 38,904.78-58,364.83-13,938.11

Finding the Fourth Proportional to 38,904.78, 58,364.83 and 13,938.11

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Solution

The fourth proportional to 38,904.78, 58,364.83 and 13,938.11 is: 20,909.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,904.78 : 58,364.83 = 13,938.11 : x
  2. Step 2: Convert to fraction form
    38,904.78/58,364.83 = 13,938.11/x
  3. Step 3: Cross multiply
    38,904.78x = 58,364.83 × 13,938.11
  4. Step 4: Simplify right side
    38,904.78x = 813,495,420.67
  5. Step 5: Solve for x
    x = 813,495,420.67/38,904.78
  6. Step 6: Final answer
    x = 20,909.91

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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.