Home / 15,210.28-20,987.94-8,924.68

Finding the Fourth Proportional to 15,210.28, 20,987.94 and 8,924.68

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Solution

The fourth proportional to 15,210.28, 20,987.94 and 8,924.68 is: 12,314.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210.28 : 20,987.94 = 8,924.68 : x
  2. Step 2: Convert to fraction form
    15,210.28/20,987.94 = 8,924.68/x
  3. Step 3: Cross multiply
    15,210.28x = 20,987.94 × 8,924.68
  4. Step 4: Simplify right side
    15,210.28x = 187,310,648.36
  5. Step 5: Solve for x
    x = 187,310,648.36/15,210.28
  6. Step 6: Final answer
    x = 12,314.74

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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.