Home / 20,927.77-31,391.71-5,132.87

Finding the Fourth Proportional to 20,927.77, 31,391.71 and 5,132.87

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Solution

The fourth proportional to 20,927.77, 31,391.71 and 5,132.87 is: 7,699.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.77 : 31,391.71 = 5,132.87 : x
  2. Step 2: Convert to fraction form
    20,927.77/31,391.71 = 5,132.87/x
  3. Step 3: Cross multiply
    20,927.77x = 31,391.71 × 5,132.87
  4. Step 4: Simplify right side
    20,927.77x = 161,129,566.51
  5. Step 5: Solve for x
    x = 161,129,566.51/20,927.77
  6. Step 6: Final answer
    x = 7,699.32

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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.