Home / 18,720.53-28,066.74-11,323.47

Finding the Fourth Proportional to 18,720.53, 28,066.74 and 11,323.47

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Solution

The fourth proportional to 18,720.53, 28,066.74 and 11,323.47 is: 16,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.53 : 28,066.74 = 11,323.47 : x
  2. Step 2: Convert to fraction form
    18,720.53/28,066.74 = 11,323.47/x
  3. Step 3: Cross multiply
    18,720.53x = 28,066.74 × 11,323.47
  4. Step 4: Simplify right side
    18,720.53x = 317,812,888.39
  5. Step 5: Solve for x
    x = 317,812,888.39/18,720.53
  6. Step 6: Final answer
    x = 16,976.70

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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.