Home / 20,112,139.70-30,168,209.55-7,333,061.30

Finding the Fourth Proportional to 20,112,139.70, 30,168,209.55 and 7,333,061.30

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Solution

The fourth proportional to 20,112,139.70, 30,168,209.55 and 7,333,061.30 is: 10,999,591.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112,139.70 : 30,168,209.55 = 7,333,061.30 : x
  2. Step 2: Convert to fraction form
    20,112,139.70/30,168,209.55 = 7,333,061.30/x
  3. Step 3: Cross multiply
    20,112,139.70x = 30,168,209.55 × 7,333,061.30
  4. Step 4: Simplify right side
    20,112,139.70x = 221,225,329,941,395.41
  5. Step 5: Solve for x
    x = 221,225,329,941,395.41/20,112,139.70
  6. Step 6: Final answer
    x = 10,999,591.95

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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.