Home / 14,139.40-19,470.90-12,956.68

Finding the Fourth Proportional to 14,139.40, 19,470.90 and 12,956.68

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Solution

The fourth proportional to 14,139.40, 19,470.90 and 12,956.68 is: 17,842.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.40 : 19,470.90 = 12,956.68 : x
  2. Step 2: Convert to fraction form
    14,139.40/19,470.90 = 12,956.68/x
  3. Step 3: Cross multiply
    14,139.40x = 19,470.90 × 12,956.68
  4. Step 4: Simplify right side
    14,139.40x = 252,278,220.61
  5. Step 5: Solve for x
    x = 252,278,220.61/14,139.40
  6. Step 6: Final answer
    x = 17,842.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.