Home / 28,502.72-39,330.24-15,927.20

Finding the Fourth Proportional to 28,502.72, 39,330.24 and 15,927.20

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Solution

The fourth proportional to 28,502.72, 39,330.24 and 15,927.20 is: 21,977.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.72 : 39,330.24 = 15,927.20 : x
  2. Step 2: Convert to fraction form
    28,502.72/39,330.24 = 15,927.20/x
  3. Step 3: Cross multiply
    28,502.72x = 39,330.24 × 15,927.20
  4. Step 4: Simplify right side
    28,502.72x = 626,420,598.53
  5. Step 5: Solve for x
    x = 626,420,598.53/28,502.72
  6. Step 6: Final answer
    x = 21,977.57

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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.