Home / 28,570.40-39,426.72-15,995.60

Finding the Fourth Proportional to 28,570.40, 39,426.72 and 15,995.60

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Solution

The fourth proportional to 28,570.40, 39,426.72 and 15,995.60 is: 22,073.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.40 : 39,426.72 = 15,995.60 : x
  2. Step 2: Convert to fraction form
    28,570.40/39,426.72 = 15,995.60/x
  3. Step 3: Cross multiply
    28,570.40x = 39,426.72 × 15,995.60
  4. Step 4: Simplify right side
    28,570.40x = 630,654,042.43
  5. Step 5: Solve for x
    x = 630,654,042.43/28,570.40
  6. Step 6: Final answer
    x = 22,073.69

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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.