Home / 13,440.11-18,543.01-7,470.63

Finding the Fourth Proportional to 13,440.11, 18,543.01 and 7,470.63

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Solution

The fourth proportional to 13,440.11, 18,543.01 and 7,470.63 is: 10,307.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.11 : 18,543.01 = 7,470.63 : x
  2. Step 2: Convert to fraction form
    13,440.11/18,543.01 = 7,470.63/x
  3. Step 3: Cross multiply
    13,440.11x = 18,543.01 × 7,470.63
  4. Step 4: Simplify right side
    13,440.11x = 138,527,836.73
  5. Step 5: Solve for x
    x = 138,527,836.73/13,440.11
  6. Step 6: Final answer
    x = 10,307.05

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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.