Home / 12,170.90-18,256.51-4,273.10

Finding the Fourth Proportional to 12,170.90, 18,256.51 and 4,273.10

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Solution

The fourth proportional to 12,170.90, 18,256.51 and 4,273.10 is: 6,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.90 : 18,256.51 = 4,273.10 : x
  2. Step 2: Convert to fraction form
    12,170.90/18,256.51 = 4,273.10/x
  3. Step 3: Cross multiply
    12,170.90x = 18,256.51 × 4,273.10
  4. Step 4: Simplify right side
    12,170.90x = 78,011,875.40
  5. Step 5: Solve for x
    x = 78,011,875.40/12,170.90
  6. Step 6: Final answer
    x = 6,409.70

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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.