Home / 11,312.20-15,610.80-6,276.28

Finding the Fourth Proportional to 11,312.20, 15,610.80 and 6,276.28

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Solution

The fourth proportional to 11,312.20, 15,610.80 and 6,276.28 is: 8,661.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,312.20 : 15,610.80 = 6,276.28 : x
  2. Step 2: Convert to fraction form
    11,312.20/15,610.80 = 6,276.28/x
  3. Step 3: Cross multiply
    11,312.20x = 15,610.80 × 6,276.28
  4. Step 4: Simplify right side
    11,312.20x = 97,977,751.82
  5. Step 5: Solve for x
    x = 97,977,751.82/11,312.20
  6. Step 6: Final answer
    x = 8,661.25

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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.