Home / 21,932.16-32,895.36-7,139.76

Finding the Fourth Proportional to 21,932.16, 32,895.36 and 7,139.76

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Solution

The fourth proportional to 21,932.16, 32,895.36 and 7,139.76 is: 10,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,932.16 : 32,895.36 = 7,139.76 : x
  2. Step 2: Convert to fraction form
    21,932.16/32,895.36 = 7,139.76/x
  3. Step 3: Cross multiply
    21,932.16x = 32,895.36 × 7,139.76
  4. Step 4: Simplify right side
    21,932.16x = 234,864,975.51
  5. Step 5: Solve for x
    x = 234,864,975.51/21,932.16
  6. Step 6: Final answer
    x = 10,708.70

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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.