Home / 39,283.70-54,209.88-21,378.74

Finding the Fourth Proportional to 39,283.70, 54,209.88 and 21,378.74

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Solution

The fourth proportional to 39,283.70, 54,209.88 and 21,378.74 is: 29,501.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,283.70 : 54,209.88 = 21,378.74 : x
  2. Step 2: Convert to fraction form
    39,283.70/54,209.88 = 21,378.74/x
  3. Step 3: Cross multiply
    39,283.70x = 54,209.88 × 21,378.74
  4. Step 4: Simplify right side
    39,283.70x = 1,158,938,658.90
  5. Step 5: Solve for x
    x = 1,158,938,658.90/39,283.70
  6. Step 6: Final answer
    x = 29,501.77

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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.