Home / 39,702.84-54,790.56-21,799.50

Finding the Fourth Proportional to 39,702.84, 54,790.56 and 21,799.50

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Solution

The fourth proportional to 39,702.84, 54,790.56 and 21,799.50 is: 30,083.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,702.84 : 54,790.56 = 21,799.50 : x
  2. Step 2: Convert to fraction form
    39,702.84/54,790.56 = 21,799.50/x
  3. Step 3: Cross multiply
    39,702.84x = 54,790.56 × 21,799.50
  4. Step 4: Simplify right side
    39,702.84x = 1,194,406,812.72
  5. Step 5: Solve for x
    x = 1,194,406,812.72/39,702.84
  6. Step 6: Final answer
    x = 30,083.66

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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.