Home / 15,004.24-20,700.80-9,705.76

Finding the Fourth Proportional to 15,004.24, 20,700.80 and 9,705.76

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Solution

The fourth proportional to 15,004.24, 20,700.80 and 9,705.76 is: 13,390.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.24 : 20,700.80 = 9,705.76 : x
  2. Step 2: Convert to fraction form
    15,004.24/20,700.80 = 9,705.76/x
  3. Step 3: Cross multiply
    15,004.24x = 20,700.80 × 9,705.76
  4. Step 4: Simplify right side
    15,004.24x = 200,916,996.61
  5. Step 5: Solve for x
    x = 200,916,996.61/15,004.24
  6. Step 6: Final answer
    x = 13,390.68

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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.