Home / 43,140.55-64,710.78-13,560.97

Finding the Fourth Proportional to 43,140.55, 64,710.78 and 13,560.97

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Solution

The fourth proportional to 43,140.55, 64,710.78 and 13,560.97 is: 20,341.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,140.55 : 64,710.78 = 13,560.97 : x
  2. Step 2: Convert to fraction form
    43,140.55/64,710.78 = 13,560.97/x
  3. Step 3: Cross multiply
    43,140.55x = 64,710.78 × 13,560.97
  4. Step 4: Simplify right side
    43,140.55x = 877,540,946.26
  5. Step 5: Solve for x
    x = 877,540,946.26/43,140.55
  6. Step 6: Final answer
    x = 20,341.44

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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.