Home / 13,543.12-18,689.70-7,575.04

Finding the Fourth Proportional to 13,543.12, 18,689.70 and 7,575.04

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Solution

The fourth proportional to 13,543.12, 18,689.70 and 7,575.04 is: 10,453.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.12 : 18,689.70 = 7,575.04 : x
  2. Step 2: Convert to fraction form
    13,543.12/18,689.70 = 7,575.04/x
  3. Step 3: Cross multiply
    13,543.12x = 18,689.70 × 7,575.04
  4. Step 4: Simplify right side
    13,543.12x = 141,575,225.09
  5. Step 5: Solve for x
    x = 141,575,225.09/13,543.12
  6. Step 6: Final answer
    x = 10,453.66

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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.