Home / 10,320.80-15,473.40-5,130.32

Finding the Fourth Proportional to 10,320.80, 15,473.40 and 5,130.32

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Solution

The fourth proportional to 10,320.80, 15,473.40 and 5,130.32 is: 7,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,320.80 : 15,473.40 = 5,130.32 : x
  2. Step 2: Convert to fraction form
    10,320.80/15,473.40 = 5,130.32/x
  3. Step 3: Cross multiply
    10,320.80x = 15,473.40 × 5,130.32
  4. Step 4: Simplify right side
    10,320.80x = 79,383,493.49
  5. Step 5: Solve for x
    x = 79,383,493.49/10,320.80
  6. Step 6: Final answer
    x = 7,691.60

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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.