Home / 15,016.49-20,722.43-8,302.40

Finding the Fourth Proportional to 15,016.49, 20,722.43 and 8,302.40

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Solution

The fourth proportional to 15,016.49, 20,722.43 and 8,302.40 is: 11,457.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.49 : 20,722.43 = 8,302.40 : x
  2. Step 2: Convert to fraction form
    15,016.49/20,722.43 = 8,302.40/x
  3. Step 3: Cross multiply
    15,016.49x = 20,722.43 × 8,302.40
  4. Step 4: Simplify right side
    15,016.49x = 172,045,757.71
  5. Step 5: Solve for x
    x = 172,045,757.71/15,016.49
  6. Step 6: Final answer
    x = 11,457.13

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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.