Home / 11,001.81-15,187.73-6,970.65

Finding the Fourth Proportional to 11,001.81, 15,187.73 and 6,970.65

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Solution

The fourth proportional to 11,001.81, 15,187.73 and 6,970.65 is: 9,622.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,001.81 : 15,187.73 = 6,970.65 : x
  2. Step 2: Convert to fraction form
    11,001.81/15,187.73 = 6,970.65/x
  3. Step 3: Cross multiply
    11,001.81x = 15,187.73 × 6,970.65
  4. Step 4: Simplify right side
    11,001.81x = 105,868,350.12
  5. Step 5: Solve for x
    x = 105,868,350.12/11,001.81
  6. Step 6: Final answer
    x = 9,622.81

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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.