Home / 53,434.80-80,145.36-13,991.76

Finding the Fourth Proportional to 53,434.80, 80,145.36 and 13,991.76

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Solution

The fourth proportional to 53,434.80, 80,145.36 and 13,991.76 is: 20,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,434.80 : 80,145.36 = 13,991.76 : x
  2. Step 2: Convert to fraction form
    53,434.80/80,145.36 = 13,991.76/x
  3. Step 3: Cross multiply
    53,434.80x = 80,145.36 × 13,991.76
  4. Step 4: Simplify right side
    53,434.80x = 1,121,374,642.23
  5. Step 5: Solve for x
    x = 1,121,374,642.23/53,434.80
  6. Step 6: Final answer
    x = 20,985.85

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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.