Home / 15,079.96-20,811-10,036.12

Finding the Fourth Proportional to 15,079.96, 20,811 and 10,036.12

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Solution

The fourth proportional to 15,079.96, 20,811 and 10,036.12 is: 13,850.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,079.96 : 20,811 = 10,036.12 : x
  2. Step 2: Convert to fraction form
    15,079.96/20,811 = 10,036.12/x
  3. Step 3: Cross multiply
    15,079.96x = 20,811 × 10,036.12
  4. Step 4: Simplify right side
    15,079.96x = 208,861,693.32
  5. Step 5: Solve for x
    x = 208,861,693.32/15,079.96
  6. Step 6: Final answer
    x = 13,850.28

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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.