Home / 39,340.61-54,289.35-21,435.74

Finding the Fourth Proportional to 39,340.61, 54,289.35 and 21,435.74

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Solution

The fourth proportional to 39,340.61, 54,289.35 and 21,435.74 is: 29,580.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.61 : 54,289.35 = 21,435.74 : x
  2. Step 2: Convert to fraction form
    39,340.61/54,289.35 = 21,435.74/x
  3. Step 3: Cross multiply
    39,340.61x = 54,289.35 × 21,435.74
  4. Step 4: Simplify right side
    39,340.61x = 1,163,732,119.92
  5. Step 5: Solve for x
    x = 1,163,732,119.92/39,340.61
  6. Step 6: Final answer
    x = 29,580.94

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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.