Home / 20,378.09-30,568.95-5,587.08

Finding the Fourth Proportional to 20,378.09, 30,568.95 and 5,587.08

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Solution

The fourth proportional to 20,378.09, 30,568.95 and 5,587.08 is: 8,381.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.09 : 30,568.95 = 5,587.08 : x
  2. Step 2: Convert to fraction form
    20,378.09/30,568.95 = 5,587.08/x
  3. Step 3: Cross multiply
    20,378.09x = 30,568.95 × 5,587.08
  4. Step 4: Simplify right side
    20,378.09x = 170,791,169.17
  5. Step 5: Solve for x
    x = 170,791,169.17/20,378.09
  6. Step 6: Final answer
    x = 8,381.12

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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.