Home / 20,927.16-31,327.56-13,505.94

Finding the Fourth Proportional to 20,927.16, 31,327.56 and 13,505.94

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Solution

The fourth proportional to 20,927.16, 31,327.56 and 13,505.94 is: 20,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.16 : 31,327.56 = 13,505.94 : x
  2. Step 2: Convert to fraction form
    20,927.16/31,327.56 = 13,505.94/x
  3. Step 3: Cross multiply
    20,927.16x = 31,327.56 × 13,505.94
  4. Step 4: Simplify right side
    20,927.16x = 423,108,145.71
  5. Step 5: Solve for x
    x = 423,108,145.71/20,927.16
  6. Step 6: Final answer
    x = 20,218.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.