Home / 10,989.50-15,159.57-7,004.30

Finding the Fourth Proportional to 10,989.50, 15,159.57 and 7,004.30

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Solution

The fourth proportional to 10,989.50, 15,159.57 and 7,004.30 is: 9,662.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.50 : 15,159.57 = 7,004.30 : x
  2. Step 2: Convert to fraction form
    10,989.50/15,159.57 = 7,004.30/x
  3. Step 3: Cross multiply
    10,989.50x = 15,159.57 × 7,004.30
  4. Step 4: Simplify right side
    10,989.50x = 106,182,176.15
  5. Step 5: Solve for x
    x = 106,182,176.15/10,989.50
  6. Step 6: Final answer
    x = 9,662.15

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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.