Home / 20,363.15-28,114.83-12,718.05

Finding the Fourth Proportional to 20,363.15, 28,114.83 and 12,718.05

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Solution

The fourth proportional to 20,363.15, 28,114.83 and 12,718.05 is: 17,559.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.15 : 28,114.83 = 12,718.05 : x
  2. Step 2: Convert to fraction form
    20,363.15/28,114.83 = 12,718.05/x
  3. Step 3: Cross multiply
    20,363.15x = 28,114.83 × 12,718.05
  4. Step 4: Simplify right side
    20,363.15x = 357,565,813.68
  5. Step 5: Solve for x
    x = 357,565,813.68/20,363.15
  6. Step 6: Final answer
    x = 17,559.46

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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.