Home / 15,215.13-20,996.93-8,501.00

Finding the Fourth Proportional to 15,215.13, 20,996.93 and 8,501.00

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Solution

The fourth proportional to 15,215.13, 20,996.93 and 8,501.00 is: 11,731.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.13 : 20,996.93 = 8,501.00 : x
  2. Step 2: Convert to fraction form
    15,215.13/20,996.93 = 8,501.00/x
  3. Step 3: Cross multiply
    15,215.13x = 20,996.93 × 8,501.00
  4. Step 4: Simplify right side
    15,215.13x = 178,494,818.20
  5. Step 5: Solve for x
    x = 178,494,818.20/15,215.13
  6. Step 6: Final answer
    x = 11,731.40

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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.