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Finding the Fourth Proportional to 10,648.80, 15,992.40 and 10,303.20

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Solution

The fourth proportional to 10,648.80, 15,992.40 and 10,303.20 is: 15,473.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,648.80 : 15,992.40 = 10,303.20 : x
  2. Step 2: Convert to fraction form
    10,648.80/15,992.40 = 10,303.20/x
  3. Step 3: Cross multiply
    10,648.80x = 15,992.40 × 10,303.20
  4. Step 4: Simplify right side
    10,648.80x = 164,772,895.68
  5. Step 5: Solve for x
    x = 164,772,895.68/10,648.80
  6. Step 6: Final answer
    x = 15,473.38

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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.