Home / 15,470.80-21,346.38-8,754.28

Finding the Fourth Proportional to 15,470.80, 21,346.38 and 8,754.28

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Solution

The fourth proportional to 15,470.80, 21,346.38 and 8,754.28 is: 12,079.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,470.80 : 21,346.38 = 8,754.28 : x
  2. Step 2: Convert to fraction form
    15,470.80/21,346.38 = 8,754.28/x
  3. Step 3: Cross multiply
    15,470.80x = 21,346.38 × 8,754.28
  4. Step 4: Simplify right side
    15,470.80x = 186,872,187.51
  5. Step 5: Solve for x
    x = 186,872,187.51/15,470.80
  6. Step 6: Final answer
    x = 12,079.03

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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.