Home / 15,645.30-21,589.65-8,570.31

Finding the Fourth Proportional to 15,645.30, 21,589.65 and 8,570.31

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Solution

The fourth proportional to 15,645.30, 21,589.65 and 8,570.31 is: 11,826.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.30 : 21,589.65 = 8,570.31 : x
  2. Step 2: Convert to fraction form
    15,645.30/21,589.65 = 8,570.31/x
  3. Step 3: Cross multiply
    15,645.30x = 21,589.65 × 8,570.31
  4. Step 4: Simplify right side
    15,645.30x = 185,029,993.29
  5. Step 5: Solve for x
    x = 185,029,993.29/15,645.30
  6. Step 6: Final answer
    x = 11,826.55

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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.