Home / 15,637-21,581.32-9,668.30

Finding the Fourth Proportional to 15,637, 21,581.32 and 9,668.30

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Solution

The fourth proportional to 15,637, 21,581.32 and 9,668.30 is: 13,343.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,637 : 21,581.32 = 9,668.30 : x
  2. Step 2: Convert to fraction form
    15,637/21,581.32 = 9,668.30/x
  3. Step 3: Cross multiply
    15,637x = 21,581.32 × 9,668.30
  4. Step 4: Simplify right side
    15,637x = 208,654,676.16
  5. Step 5: Solve for x
    x = 208,654,676.16/15,637
  6. Step 6: Final answer
    x = 13,343.65

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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.