Home / 39,884.60-55,041.11-21,980.24

Finding the Fourth Proportional to 39,884.60, 55,041.11 and 21,980.24

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Solution

The fourth proportional to 39,884.60, 55,041.11 and 21,980.24 is: 30,332.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,884.60 : 55,041.11 = 21,980.24 : x
  2. Step 2: Convert to fraction form
    39,884.60/55,041.11 = 21,980.24/x
  3. Step 3: Cross multiply
    39,884.60x = 55,041.11 × 21,980.24
  4. Step 4: Simplify right side
    39,884.60x = 1,209,816,697.77
  5. Step 5: Solve for x
    x = 1,209,816,697.77/39,884.60
  6. Step 6: Final answer
    x = 30,332.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.