Home / 13,353.65-18,427.68-7,385.57

Finding the Fourth Proportional to 13,353.65, 18,427.68 and 7,385.57

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Solution

The fourth proportional to 13,353.65, 18,427.68 and 7,385.57 is: 10,191.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.65 : 18,427.68 = 7,385.57 : x
  2. Step 2: Convert to fraction form
    13,353.65/18,427.68 = 7,385.57/x
  3. Step 3: Cross multiply
    13,353.65x = 18,427.68 × 7,385.57
  4. Step 4: Simplify right side
    13,353.65x = 136,098,966.65
  5. Step 5: Solve for x
    x = 136,098,966.65/13,353.65
  6. Step 6: Final answer
    x = 10,191.89

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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.