Home / 33,030.20-49,545.30-21,220.40

Finding the Fourth Proportional to 33,030.20, 49,545.30 and 21,220.40

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Solution

The fourth proportional to 33,030.20, 49,545.30 and 21,220.40 is: 31,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,030.20 : 49,545.30 = 21,220.40 : x
  2. Step 2: Convert to fraction form
    33,030.20/49,545.30 = 21,220.40/x
  3. Step 3: Cross multiply
    33,030.20x = 49,545.30 × 21,220.40
  4. Step 4: Simplify right side
    33,030.20x = 1,051,371,084.12
  5. Step 5: Solve for x
    x = 1,051,371,084.12/33,030.20
  6. Step 6: Final answer
    x = 31,830.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.