Home / 20,580.77-28,401.08-11,506.10

Finding the Fourth Proportional to 20,580.77, 28,401.08 and 11,506.10

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Solution

The fourth proportional to 20,580.77, 28,401.08 and 11,506.10 is: 15,878.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.77 : 28,401.08 = 11,506.10 : x
  2. Step 2: Convert to fraction form
    20,580.77/28,401.08 = 11,506.10/x
  3. Step 3: Cross multiply
    20,580.77x = 28,401.08 × 11,506.10
  4. Step 4: Simplify right side
    20,580.77x = 326,785,467.05
  5. Step 5: Solve for x
    x = 326,785,467.05/20,580.77
  6. Step 6: Final answer
    x = 15,878.19

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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.