Home / 39,971.60-55,162.60-22,981.36

Finding the Fourth Proportional to 39,971.60, 55,162.60 and 22,981.36

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Solution

The fourth proportional to 39,971.60, 55,162.60 and 22,981.36 is: 31,715.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,971.60 : 55,162.60 = 22,981.36 : x
  2. Step 2: Convert to fraction form
    39,971.60/55,162.60 = 22,981.36/x
  3. Step 3: Cross multiply
    39,971.60x = 55,162.60 × 22,981.36
  4. Step 4: Simplify right side
    39,971.60x = 1,267,711,569.14
  5. Step 5: Solve for x
    x = 1,267,711,569.14/39,971.60
  6. Step 6: Final answer
    x = 31,715.31

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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.