Home / 21,957.02-30,318.16-20,277.82

Finding the Fourth Proportional to 21,957.02, 30,318.16 and 20,277.82

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Solution

The fourth proportional to 21,957.02, 30,318.16 and 20,277.82 is: 27,999.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.02 : 30,318.16 = 20,277.82 : x
  2. Step 2: Convert to fraction form
    21,957.02/30,318.16 = 20,277.82/x
  3. Step 3: Cross multiply
    21,957.02x = 30,318.16 × 20,277.82
  4. Step 4: Simplify right side
    21,957.02x = 614,785,988.93
  5. Step 5: Solve for x
    x = 614,785,988.93/21,957.02
  6. Step 6: Final answer
    x = 27,999.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.