Home / 10,655.78-15,977.55-4,077.86

Finding the Fourth Proportional to 10,655.78, 15,977.55 and 4,077.86

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Solution

The fourth proportional to 10,655.78, 15,977.55 and 4,077.86 is: 6,114.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,655.78 : 15,977.55 = 4,077.86 : x
  2. Step 2: Convert to fraction form
    10,655.78/15,977.55 = 4,077.86/x
  3. Step 3: Cross multiply
    10,655.78x = 15,977.55 × 4,077.86
  4. Step 4: Simplify right side
    10,655.78x = 65,154,212.04
  5. Step 5: Solve for x
    x = 65,154,212.04/10,655.78
  6. Step 6: Final answer
    x = 6,114.45

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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.