Home / 15,661.47-21,613.82-10,346.97

Finding the Fourth Proportional to 15,661.47, 21,613.82 and 10,346.97

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Solution

The fourth proportional to 15,661.47, 21,613.82 and 10,346.97 is: 14,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661.47 : 21,613.82 = 10,346.97 : x
  2. Step 2: Convert to fraction form
    15,661.47/21,613.82 = 10,346.97/x
  3. Step 3: Cross multiply
    15,661.47x = 21,613.82 × 10,346.97
  4. Step 4: Simplify right side
    15,661.47x = 223,637,547.13
  5. Step 5: Solve for x
    x = 223,637,547.13/15,661.47
  6. Step 6: Final answer
    x = 14,279.47

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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.