Home / 28,230.31-38,957.82-15,655.06

Finding the Fourth Proportional to 28,230.31, 38,957.82 and 15,655.06

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Solution

The fourth proportional to 28,230.31, 38,957.82 and 15,655.06 is: 21,603.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,230.31 : 38,957.82 = 15,655.06 : x
  2. Step 2: Convert to fraction form
    28,230.31/38,957.82 = 15,655.06/x
  3. Step 3: Cross multiply
    28,230.31x = 38,957.82 × 15,655.06
  4. Step 4: Simplify right side
    28,230.31x = 609,887,009.57
  5. Step 5: Solve for x
    x = 609,887,009.57/28,230.31
  6. Step 6: Final answer
    x = 21,603.98

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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.