Home / 10,867.80-14,976.06-7,715.16

Finding the Fourth Proportional to 10,867.80, 14,976.06 and 7,715.16

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Solution

The fourth proportional to 10,867.80, 14,976.06 and 7,715.16 is: 10,631.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,867.80 : 14,976.06 = 7,715.16 : x
  2. Step 2: Convert to fraction form
    10,867.80/14,976.06 = 7,715.16/x
  3. Step 3: Cross multiply
    10,867.80x = 14,976.06 × 7,715.16
  4. Step 4: Simplify right side
    10,867.80x = 115,542,699.07
  5. Step 5: Solve for x
    x = 115,542,699.07/10,867.80
  6. Step 6: Final answer
    x = 10,631.65

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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.