Home / 18,742.13-28,109.05-5,412.23

Finding the Fourth Proportional to 18,742.13, 28,109.05 and 5,412.23

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Solution

The fourth proportional to 18,742.13, 28,109.05 and 5,412.23 is: 8,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.13 : 28,109.05 = 5,412.23 : x
  2. Step 2: Convert to fraction form
    18,742.13/28,109.05 = 5,412.23/x
  3. Step 3: Cross multiply
    18,742.13x = 28,109.05 × 5,412.23
  4. Step 4: Simplify right side
    18,742.13x = 152,132,643.68
  5. Step 5: Solve for x
    x = 152,132,643.68/18,742.13
  6. Step 6: Final answer
    x = 8,117.15

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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.