Home / 15,348.89-21,181.70-8,543.48

Finding the Fourth Proportional to 15,348.89, 21,181.70 and 8,543.48

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Solution

The fourth proportional to 15,348.89, 21,181.70 and 8,543.48 is: 11,790.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.89 : 21,181.70 = 8,543.48 : x
  2. Step 2: Convert to fraction form
    15,348.89/21,181.70 = 8,543.48/x
  3. Step 3: Cross multiply
    15,348.89x = 21,181.70 × 8,543.48
  4. Step 4: Simplify right side
    15,348.89x = 180,965,345.77
  5. Step 5: Solve for x
    x = 180,965,345.77/15,348.89
  6. Step 6: Final answer
    x = 11,790.12

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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.