Home / 15,145.02-20,899.94-8,430.66

Finding the Fourth Proportional to 15,145.02, 20,899.94 and 8,430.66

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Solution

The fourth proportional to 15,145.02, 20,899.94 and 8,430.66 is: 11,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.02 : 20,899.94 = 8,430.66 : x
  2. Step 2: Convert to fraction form
    15,145.02/20,899.94 = 8,430.66/x
  3. Step 3: Cross multiply
    15,145.02x = 20,899.94 × 8,430.66
  4. Step 4: Simplify right side
    15,145.02x = 176,200,246.01
  5. Step 5: Solve for x
    x = 176,200,246.01/15,145.02
  6. Step 6: Final answer
    x = 11,634.20

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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.