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Finding the Fourth Proportional to 29,920.80, 44,859.60 and 19,538.40

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Solution

The fourth proportional to 29,920.80, 44,859.60 and 19,538.40 is: 29,293.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,920.80 : 44,859.60 = 19,538.40 : x
  2. Step 2: Convert to fraction form
    29,920.80/44,859.60 = 19,538.40/x
  3. Step 3: Cross multiply
    29,920.80x = 44,859.60 × 19,538.40
  4. Step 4: Simplify right side
    29,920.80x = 876,484,808.64
  5. Step 5: Solve for x
    x = 876,484,808.64/29,920.80
  6. Step 6: Final answer
    x = 29,293.50

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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.