Home / 15,325.74-21,149.51-8,956.71

Finding the Fourth Proportional to 15,325.74, 21,149.51 and 8,956.71

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Solution

The fourth proportional to 15,325.74, 21,149.51 and 8,956.71 is: 12,360.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,325.74 : 21,149.51 = 8,956.71 : x
  2. Step 2: Convert to fraction form
    15,325.74/21,149.51 = 8,956.71/x
  3. Step 3: Cross multiply
    15,325.74x = 21,149.51 × 8,956.71
  4. Step 4: Simplify right side
    15,325.74x = 189,429,982.93
  5. Step 5: Solve for x
    x = 189,429,982.93/15,325.74
  6. Step 6: Final answer
    x = 12,360.25

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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.