Home / 13,543.16-18,690.45-7,575.86

Finding the Fourth Proportional to 13,543.16, 18,690.45 and 7,575.86

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Solution

The fourth proportional to 13,543.16, 18,690.45 and 7,575.86 is: 10,455.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.16 : 18,690.45 = 7,575.86 : x
  2. Step 2: Convert to fraction form
    13,543.16/18,690.45 = 7,575.86/x
  3. Step 3: Cross multiply
    13,543.16x = 18,690.45 × 7,575.86
  4. Step 4: Simplify right side
    13,543.16x = 141,596,232.54
  5. Step 5: Solve for x
    x = 141,596,232.54/13,543.16
  6. Step 6: Final answer
    x = 10,455.18

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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.