Home / 21,142.48-31,711.26-5,561.32

Finding the Fourth Proportional to 21,142.48, 31,711.26 and 5,561.32

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Solution

The fourth proportional to 21,142.48, 31,711.26 and 5,561.32 is: 8,341.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.48 : 31,711.26 = 5,561.32 : x
  2. Step 2: Convert to fraction form
    21,142.48/31,711.26 = 5,561.32/x
  3. Step 3: Cross multiply
    21,142.48x = 31,711.26 × 5,561.32
  4. Step 4: Simplify right side
    21,142.48x = 176,356,464.46
  5. Step 5: Solve for x
    x = 176,356,464.46/21,142.48
  6. Step 6: Final answer
    x = 8,341.33

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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.