Home / 20,513.16-28,308.18-12,013.74

Finding the Fourth Proportional to 20,513.16, 28,308.18 and 12,013.74

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Solution

The fourth proportional to 20,513.16, 28,308.18 and 12,013.74 is: 16,578.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.16 : 28,308.18 = 12,013.74 : x
  2. Step 2: Convert to fraction form
    20,513.16/28,308.18 = 12,013.74/x
  3. Step 3: Cross multiply
    20,513.16x = 28,308.18 × 12,013.74
  4. Step 4: Simplify right side
    20,513.16x = 340,087,114.39
  5. Step 5: Solve for x
    x = 340,087,114.39/20,513.16
  6. Step 6: Final answer
    x = 16,578.97

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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.