Home / 10,980.93-15,160.67-7,210.79

Finding the Fourth Proportional to 10,980.93, 15,160.67 and 7,210.79

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Solution

The fourth proportional to 10,980.93, 15,160.67 and 7,210.79 is: 9,955.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.93 : 15,160.67 = 7,210.79 : x
  2. Step 2: Convert to fraction form
    10,980.93/15,160.67 = 7,210.79/x
  3. Step 3: Cross multiply
    10,980.93x = 15,160.67 × 7,210.79
  4. Step 4: Simplify right side
    10,980.93x = 109,320,295.77
  5. Step 5: Solve for x
    x = 109,320,295.77/10,980.93
  6. Step 6: Final answer
    x = 9,955.47

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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.