Home / 30,285,965.80-45,428,948.70-18,192,730.60

Finding the Fourth Proportional to 30,285,965.80, 45,428,948.70 and 18,192,730.60

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Solution

The fourth proportional to 30,285,965.80, 45,428,948.70 and 18,192,730.60 is: 27,289,095.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,285,965.80 : 45,428,948.70 = 18,192,730.60 : x
  2. Step 2: Convert to fraction form
    30,285,965.80/45,428,948.70 = 18,192,730.60/x
  3. Step 3: Cross multiply
    30,285,965.80x = 45,428,948.70 × 18,192,730.60
  4. Step 4: Simplify right side
    30,285,965.80x = 826,476,625,140,320.38
  5. Step 5: Solve for x
    x = 826,476,625,140,320.38/30,285,965.80
  6. Step 6: Final answer
    x = 27,289,095.90

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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.