Home / 21,045.30-31,560.66-9,957.21

Finding the Fourth Proportional to 21,045.30, 31,560.66 and 9,957.21

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Solution

The fourth proportional to 21,045.30, 31,560.66 and 9,957.21 is: 14,932.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.30 : 31,560.66 = 9,957.21 : x
  2. Step 2: Convert to fraction form
    21,045.30/31,560.66 = 9,957.21/x
  3. Step 3: Cross multiply
    21,045.30x = 31,560.66 × 9,957.21
  4. Step 4: Simplify right side
    21,045.30x = 314,256,119.36
  5. Step 5: Solve for x
    x = 314,256,119.36/21,045.30
  6. Step 6: Final answer
    x = 14,932.37

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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.