Home / 18,720.74-28,085.16-5,574.17

Finding the Fourth Proportional to 18,720.74, 28,085.16 and 5,574.17

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Solution

The fourth proportional to 18,720.74, 28,085.16 and 5,574.17 is: 8,362.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.74 : 28,085.16 = 5,574.17 : x
  2. Step 2: Convert to fraction form
    18,720.74/28,085.16 = 5,574.17/x
  3. Step 3: Cross multiply
    18,720.74x = 28,085.16 × 5,574.17
  4. Step 4: Simplify right side
    18,720.74x = 156,551,456.32
  5. Step 5: Solve for x
    x = 156,551,456.32/18,720.74
  6. Step 6: Final answer
    x = 8,362.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.