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Finding the Fourth Proportional to 52,886.40, 79,329.12 and 13,443.12

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Solution

The fourth proportional to 52,886.40, 79,329.12 and 13,443.12 is: 20,164.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,886.40 : 79,329.12 = 13,443.12 : x
  2. Step 2: Convert to fraction form
    52,886.40/79,329.12 = 13,443.12/x
  3. Step 3: Cross multiply
    52,886.40x = 79,329.12 × 13,443.12
  4. Step 4: Simplify right side
    52,886.40x = 1,066,430,879.65
  5. Step 5: Solve for x
    x = 1,066,430,879.65/52,886.40
  6. Step 6: Final answer
    x = 20,164.56

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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.