Home / 15,613.70-21,547.42-8,539.97

Finding the Fourth Proportional to 15,613.70, 21,547.42 and 8,539.97

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Solution

The fourth proportional to 15,613.70, 21,547.42 and 8,539.97 is: 11,785.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.70 : 21,547.42 = 8,539.97 : x
  2. Step 2: Convert to fraction form
    15,613.70/21,547.42 = 8,539.97/x
  3. Step 3: Cross multiply
    15,613.70x = 21,547.42 × 8,539.97
  4. Step 4: Simplify right side
    15,613.70x = 184,014,191.29
  5. Step 5: Solve for x
    x = 184,014,191.29/15,613.70
  6. Step 6: Final answer
    x = 11,785.44

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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.