Home / 20,332.10-28,056.03-11,378.36

Finding the Fourth Proportional to 20,332.10, 28,056.03 and 11,378.36

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Solution

The fourth proportional to 20,332.10, 28,056.03 and 11,378.36 is: 15,700.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.10 : 28,056.03 = 11,378.36 : x
  2. Step 2: Convert to fraction form
    20,332.10/28,056.03 = 11,378.36/x
  3. Step 3: Cross multiply
    20,332.10x = 28,056.03 × 11,378.36
  4. Step 4: Simplify right side
    20,332.10x = 319,231,609.51
  5. Step 5: Solve for x
    x = 319,231,609.51/20,332.10
  6. Step 6: Final answer
    x = 15,700.87

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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.