Home / 39,340.47-54,289.20-21,435.42

Finding the Fourth Proportional to 39,340.47, 54,289.20 and 21,435.42

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Solution

The fourth proportional to 39,340.47, 54,289.20 and 21,435.42 is: 29,580.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.47 : 54,289.20 = 21,435.42 : x
  2. Step 2: Convert to fraction form
    39,340.47/54,289.20 = 21,435.42/x
  3. Step 3: Cross multiply
    39,340.47x = 54,289.20 × 21,435.42
  4. Step 4: Simplify right side
    39,340.47x = 1,163,711,803.46
  5. Step 5: Solve for x
    x = 1,163,711,803.46/39,340.47
  6. Step 6: Final answer
    x = 29,580.53

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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.