Home / 15,014.31-20,720.13-8,300.04

Finding the Fourth Proportional to 15,014.31, 20,720.13 and 8,300.04

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Solution

The fourth proportional to 15,014.31, 20,720.13 and 8,300.04 is: 11,454.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.31 : 20,720.13 = 8,300.04 : x
  2. Step 2: Convert to fraction form
    15,014.31/20,720.13 = 8,300.04/x
  3. Step 3: Cross multiply
    15,014.31x = 20,720.13 × 8,300.04
  4. Step 4: Simplify right side
    15,014.31x = 171,977,798.98
  5. Step 5: Solve for x
    x = 171,977,798.98/15,014.31
  6. Step 6: Final answer
    x = 11,454.26

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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.