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Finding the Fourth Proportional to 34,958.40, 48,230.88 and 20,803.20

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Solution

The fourth proportional to 34,958.40, 48,230.88 and 20,803.20 is: 28,701.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,958.40 : 48,230.88 = 20,803.20 : x
  2. Step 2: Convert to fraction form
    34,958.40/48,230.88 = 20,803.20/x
  3. Step 3: Cross multiply
    34,958.40x = 48,230.88 × 20,803.20
  4. Step 4: Simplify right side
    34,958.40x = 1,003,356,642.82
  5. Step 5: Solve for x
    x = 1,003,356,642.82/34,958.40
  6. Step 6: Final answer
    x = 28,701.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.