Home / 28,502.64-39,333.06-15,581.72

Finding the Fourth Proportional to 28,502.64, 39,333.06 and 15,581.72

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Solution

The fourth proportional to 28,502.64, 39,333.06 and 15,581.72 is: 21,502.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.64 : 39,333.06 = 15,581.72 : x
  2. Step 2: Convert to fraction form
    28,502.64/39,333.06 = 15,581.72/x
  3. Step 3: Cross multiply
    28,502.64x = 39,333.06 × 15,581.72
  4. Step 4: Simplify right side
    28,502.64x = 612,876,826.00
  5. Step 5: Solve for x
    x = 612,876,826.00/28,502.64
  6. Step 6: Final answer
    x = 21,502.46

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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.