Home / 10,215.30-15,323.40-5,772.90

Finding the Fourth Proportional to 10,215.30, 15,323.40 and 5,772.90

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Solution

The fourth proportional to 10,215.30, 15,323.40 and 5,772.90 is: 8,659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.30 : 15,323.40 = 5,772.90 : x
  2. Step 2: Convert to fraction form
    10,215.30/15,323.40 = 5,772.90/x
  3. Step 3: Cross multiply
    10,215.30x = 15,323.40 × 5,772.90
  4. Step 4: Simplify right side
    10,215.30x = 88,460,455.86
  5. Step 5: Solve for x
    x = 88,460,455.86/10,215.30
  6. Step 6: Final answer
    x = 8,659.60

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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.