Home / 15,187.56-20,950.38-8,898.72

Finding the Fourth Proportional to 15,187.56, 20,950.38 and 8,898.72

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Solution

The fourth proportional to 15,187.56, 20,950.38 and 8,898.72 is: 12,275.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.56 : 20,950.38 = 8,898.72 : x
  2. Step 2: Convert to fraction form
    15,187.56/20,950.38 = 8,898.72/x
  3. Step 3: Cross multiply
    15,187.56x = 20,950.38 × 8,898.72
  4. Step 4: Simplify right side
    15,187.56x = 186,431,565.51
  5. Step 5: Solve for x
    x = 186,431,565.51/15,187.56
  6. Step 6: Final answer
    x = 12,275.28

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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.