Home / 10,297.52-15,428.64-5,620.81

Finding the Fourth Proportional to 10,297.52, 15,428.64 and 5,620.81

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Solution

The fourth proportional to 10,297.52, 15,428.64 and 5,620.81 is: 8,421.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,297.52 : 15,428.64 = 5,620.81 : x
  2. Step 2: Convert to fraction form
    10,297.52/15,428.64 = 5,620.81/x
  3. Step 3: Cross multiply
    10,297.52x = 15,428.64 × 5,620.81
  4. Step 4: Simplify right side
    10,297.52x = 86,721,454.00
  5. Step 5: Solve for x
    x = 86,721,454.00/10,297.52
  6. Step 6: Final answer
    x = 8,421.59

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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.