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Finding the Fourth Proportional to 53,211.48, 79,807.65 and 13,766.21

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Solution

The fourth proportional to 53,211.48, 79,807.65 and 13,766.21 is: 20,646.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,211.48 : 79,807.65 = 13,766.21 : x
  2. Step 2: Convert to fraction form
    53,211.48/79,807.65 = 13,766.21/x
  3. Step 3: Cross multiply
    53,211.48x = 79,807.65 × 13,766.21
  4. Step 4: Simplify right side
    53,211.48x = 1,098,648,869.51
  5. Step 5: Solve for x
    x = 1,098,648,869.51/53,211.48
  6. Step 6: Final answer
    x = 20,646.84

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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.