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Finding the Fourth Proportional to 52,864.80, 79,297.43 and 13,421.80

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Solution

The fourth proportional to 52,864.80, 79,297.43 and 13,421.80 is: 20,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,864.80 : 79,297.43 = 13,421.80 : x
  2. Step 2: Convert to fraction form
    52,864.80/79,297.43 = 13,421.80/x
  3. Step 3: Cross multiply
    52,864.80x = 79,297.43 × 13,421.80
  4. Step 4: Simplify right side
    52,864.80x = 1,064,314,353.48
  5. Step 5: Solve for x
    x = 1,064,314,353.48/52,864.80
  6. Step 6: Final answer
    x = 20,132.76

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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.