Home / 13,543.29-18,689.40-7,575.21

Finding the Fourth Proportional to 13,543.29, 18,689.40 and 7,575.21

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Solution

The fourth proportional to 13,543.29, 18,689.40 and 7,575.21 is: 10,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.29 : 18,689.40 = 7,575.21 : x
  2. Step 2: Convert to fraction form
    13,543.29/18,689.40 = 7,575.21/x
  3. Step 3: Cross multiply
    13,543.29x = 18,689.40 × 7,575.21
  4. Step 4: Simplify right side
    13,543.29x = 141,576,129.77
  5. Step 5: Solve for x
    x = 141,576,129.77/13,543.29
  6. Step 6: Final answer
    x = 10,453.60

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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.