Home / 28,547.20-39,394.32-15,800.91

Finding the Fourth Proportional to 28,547.20, 39,394.32 and 15,800.91

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Solution

The fourth proportional to 28,547.20, 39,394.32 and 15,800.91 is: 21,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.20 : 39,394.32 = 15,800.91 : x
  2. Step 2: Convert to fraction form
    28,547.20/39,394.32 = 15,800.91/x
  3. Step 3: Cross multiply
    28,547.20x = 39,394.32 × 15,800.91
  4. Step 4: Simplify right side
    28,547.20x = 622,466,104.83
  5. Step 5: Solve for x
    x = 622,466,104.83/28,547.20
  6. Step 6: Final answer
    x = 21,804.80

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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.