Home / 10,543.60-15,822.80-7,777.45

Finding the Fourth Proportional to 10,543.60, 15,822.80 and 7,777.45

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Solution

The fourth proportional to 10,543.60, 15,822.80 and 7,777.45 is: 11,671.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,543.60 : 15,822.80 = 7,777.45 : x
  2. Step 2: Convert to fraction form
    10,543.60/15,822.80 = 7,777.45/x
  3. Step 3: Cross multiply
    10,543.60x = 15,822.80 × 7,777.45
  4. Step 4: Simplify right side
    10,543.60x = 123,061,035.86
  5. Step 5: Solve for x
    x = 123,061,035.86/10,543.60
  6. Step 6: Final answer
    x = 11,671.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.