Home / 28,113.24-38,798.68-15,540.40

Finding the Fourth Proportional to 28,113.24, 38,798.68 and 15,540.40

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Solution

The fourth proportional to 28,113.24, 38,798.68 and 15,540.40 is: 21,447.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.24 : 38,798.68 = 15,540.40 : x
  2. Step 2: Convert to fraction form
    28,113.24/38,798.68 = 15,540.40/x
  3. Step 3: Cross multiply
    28,113.24x = 38,798.68 × 15,540.40
  4. Step 4: Simplify right side
    28,113.24x = 602,947,006.67
  5. Step 5: Solve for x
    x = 602,947,006.67/28,113.24
  6. Step 6: Final answer
    x = 21,447.08

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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.