Home / 15,215.46-20,996.91-8,316.35

Finding the Fourth Proportional to 15,215.46, 20,996.91 and 8,316.35

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Solution

The fourth proportional to 15,215.46, 20,996.91 and 8,316.35 is: 11,476.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.46 : 20,996.91 = 8,316.35 : x
  2. Step 2: Convert to fraction form
    15,215.46/20,996.91 = 8,316.35/x
  3. Step 3: Cross multiply
    15,215.46x = 20,996.91 × 8,316.35
  4. Step 4: Simplify right side
    15,215.46x = 174,617,547.49
  5. Step 5: Solve for x
    x = 174,617,547.49/15,215.46
  6. Step 6: Final answer
    x = 11,476.32

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Double scale
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Similar ratio
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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.