Home / 10,980.09-15,155.10-7,007.04

Finding the Fourth Proportional to 10,980.09, 15,155.10 and 7,007.04

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Solution

The fourth proportional to 10,980.09, 15,155.10 and 7,007.04 is: 9,671.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.09 : 15,155.10 = 7,007.04 : x
  2. Step 2: Convert to fraction form
    10,980.09/15,155.10 = 7,007.04/x
  3. Step 3: Cross multiply
    10,980.09x = 15,155.10 × 7,007.04
  4. Step 4: Simplify right side
    10,980.09x = 106,192,391.90
  5. Step 5: Solve for x
    x = 106,192,391.90/10,980.09
  6. Step 6: Final answer
    x = 9,671.36

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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.