Home / 10,315.47-15,473.16-7,020.39

Finding the Fourth Proportional to 10,315.47, 15,473.16 and 7,020.39

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Solution

The fourth proportional to 10,315.47, 15,473.16 and 7,020.39 is: 10,530.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,315.47 : 15,473.16 = 7,020.39 : x
  2. Step 2: Convert to fraction form
    10,315.47/15,473.16 = 7,020.39/x
  3. Step 3: Cross multiply
    10,315.47x = 15,473.16 × 7,020.39
  4. Step 4: Simplify right side
    10,315.47x = 108,627,617.73
  5. Step 5: Solve for x
    x = 108,627,617.73/10,315.47
  6. Step 6: Final answer
    x = 10,530.55

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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.