Home / 20,912,952.20-31,369,428.30-7,450,219.40

Finding the Fourth Proportional to 20,912,952.20, 31,369,428.30 and 7,450,219.40

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Solution

The fourth proportional to 20,912,952.20, 31,369,428.30 and 7,450,219.40 is: 11,175,329.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,952.20 : 31,369,428.30 = 7,450,219.40 : x
  2. Step 2: Convert to fraction form
    20,912,952.20/31,369,428.30 = 7,450,219.40/x
  3. Step 3: Cross multiply
    20,912,952.20x = 31,369,428.30 × 7,450,219.40
  4. Step 4: Simplify right side
    20,912,952.20x = 233,709,123,287,569.03
  5. Step 5: Solve for x
    x = 233,709,123,287,569.03/20,912,952.20
  6. Step 6: Final answer
    x = 11,175,329.10

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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.