Home / 10,277.80-15,407.70-6,980.20

Finding the Fourth Proportional to 10,277.80, 15,407.70 and 6,980.20

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Solution

The fourth proportional to 10,277.80, 15,407.70 and 6,980.20 is: 10,464.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,277.80 : 15,407.70 = 6,980.20 : x
  2. Step 2: Convert to fraction form
    10,277.80/15,407.70 = 6,980.20/x
  3. Step 3: Cross multiply
    10,277.80x = 15,407.70 × 6,980.20
  4. Step 4: Simplify right side
    10,277.80x = 107,548,827.54
  5. Step 5: Solve for x
    x = 107,548,827.54/10,277.80
  6. Step 6: Final answer
    x = 10,464.19

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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.