Home / 15,397.31-21,245.55-8,683.22

Finding the Fourth Proportional to 15,397.31, 21,245.55 and 8,683.22

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Solution

The fourth proportional to 15,397.31, 21,245.55 and 8,683.22 is: 11,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,397.31 : 21,245.55 = 8,683.22 : x
  2. Step 2: Convert to fraction form
    15,397.31/21,245.55 = 8,683.22/x
  3. Step 3: Cross multiply
    15,397.31x = 21,245.55 × 8,683.22
  4. Step 4: Simplify right side
    15,397.31x = 184,479,784.67
  5. Step 5: Solve for x
    x = 184,479,784.67/15,397.31
  6. Step 6: Final answer
    x = 11,981.30

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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.