Home / 28,165.22-38,870.43-15,592.40

Finding the Fourth Proportional to 28,165.22, 38,870.43 and 15,592.40

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Solution

The fourth proportional to 28,165.22, 38,870.43 and 15,592.40 is: 21,518.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,165.22 : 38,870.43 = 15,592.40 : x
  2. Step 2: Convert to fraction form
    28,165.22/38,870.43 = 15,592.40/x
  3. Step 3: Cross multiply
    28,165.22x = 38,870.43 × 15,592.40
  4. Step 4: Simplify right side
    28,165.22x = 606,083,273.38
  5. Step 5: Solve for x
    x = 606,083,273.38/28,165.22
  6. Step 6: Final answer
    x = 21,518.86

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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.