Home / 28,305.81-39,062.11-15,560.30

Finding the Fourth Proportional to 28,305.81, 39,062.11 and 15,560.30

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Solution

The fourth proportional to 28,305.81, 39,062.11 and 15,560.30 is: 21,473.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.81 : 39,062.11 = 15,560.30 : x
  2. Step 2: Convert to fraction form
    28,305.81/39,062.11 = 15,560.30/x
  3. Step 3: Cross multiply
    28,305.81x = 39,062.11 × 15,560.30
  4. Step 4: Simplify right side
    28,305.81x = 607,818,150.23
  5. Step 5: Solve for x
    x = 607,818,150.23/28,305.81
  6. Step 6: Final answer
    x = 21,473.26

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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.