Home / 28,498.64-39,320.40-15,923.12

Finding the Fourth Proportional to 28,498.64, 39,320.40 and 15,923.12

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Solution

The fourth proportional to 28,498.64, 39,320.40 and 15,923.12 is: 21,969.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,498.64 : 39,320.40 = 15,923.12 : x
  2. Step 2: Convert to fraction form
    28,498.64/39,320.40 = 15,923.12/x
  3. Step 3: Cross multiply
    28,498.64x = 39,320.40 × 15,923.12
  4. Step 4: Simplify right side
    28,498.64x = 626,103,447.65
  5. Step 5: Solve for x
    x = 626,103,447.65/28,498.64
  6. Step 6: Final answer
    x = 21,969.59

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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.