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Finding the Fourth Proportional to 53,329.68, 79,993.68 and 13,885.92

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Solution

The fourth proportional to 53,329.68, 79,993.68 and 13,885.92 is: 20,828.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,329.68 : 79,993.68 = 13,885.92 : x
  2. Step 2: Convert to fraction form
    53,329.68/79,993.68 = 13,885.92/x
  3. Step 3: Cross multiply
    53,329.68x = 79,993.68 × 13,885.92
  4. Step 4: Simplify right side
    53,329.68x = 1,110,785,840.99
  5. Step 5: Solve for x
    x = 1,110,785,840.99/53,329.68
  6. Step 6: Final answer
    x = 20,828.66

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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.