Home / 10,214.77-15,290.56-8,720.32

Finding the Fourth Proportional to 10,214.77, 15,290.56 and 8,720.32

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Solution

The fourth proportional to 10,214.77, 15,290.56 and 8,720.32 is: 13,053.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,214.77 : 15,290.56 = 8,720.32 : x
  2. Step 2: Convert to fraction form
    10,214.77/15,290.56 = 8,720.32/x
  3. Step 3: Cross multiply
    10,214.77x = 15,290.56 × 8,720.32
  4. Step 4: Simplify right side
    10,214.77x = 133,338,576.18
  5. Step 5: Solve for x
    x = 133,338,576.18/10,214.77
  6. Step 6: Final answer
    x = 13,053.51

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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.