Home / 13,353.80-18,427.64-7,385.04

Finding the Fourth Proportional to 13,353.80, 18,427.64 and 7,385.04

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Solution

The fourth proportional to 13,353.80, 18,427.64 and 7,385.04 is: 10,191.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.80 : 18,427.64 = 7,385.04 : x
  2. Step 2: Convert to fraction form
    13,353.80/18,427.64 = 7,385.04/x
  3. Step 3: Cross multiply
    13,353.80x = 18,427.64 × 7,385.04
  4. Step 4: Simplify right side
    13,353.80x = 136,088,821.58
  5. Step 5: Solve for x
    x = 136,088,821.58/13,353.80
  6. Step 6: Final answer
    x = 10,191.02

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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.