Home / 47,954.20-71,931.30-12,897.40

Finding the Fourth Proportional to 47,954.20, 71,931.30 and 12,897.40

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Solution

The fourth proportional to 47,954.20, 71,931.30 and 12,897.40 is: 19,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,954.20 : 71,931.30 = 12,897.40 : x
  2. Step 2: Convert to fraction form
    47,954.20/71,931.30 = 12,897.40/x
  3. Step 3: Cross multiply
    47,954.20x = 71,931.30 × 12,897.40
  4. Step 4: Simplify right side
    47,954.20x = 927,726,748.62
  5. Step 5: Solve for x
    x = 927,726,748.62/47,954.20
  6. Step 6: Final answer
    x = 19,346.10

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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.