Home / 20,160,019.20-30,240,028.80-18,406,263.90

Finding the Fourth Proportional to 20,160,019.20, 30,240,028.80 and 18,406,263.90

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Solution

The fourth proportional to 20,160,019.20, 30,240,028.80 and 18,406,263.90 is: 27,609,395.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160,019.20 : 30,240,028.80 = 18,406,263.90 : x
  2. Step 2: Convert to fraction form
    20,160,019.20/30,240,028.80 = 18,406,263.90/x
  3. Step 3: Cross multiply
    20,160,019.20x = 30,240,028.80 × 18,406,263.90
  4. Step 4: Simplify right side
    20,160,019.20x = 556,605,950,436,400.31
  5. Step 5: Solve for x
    x = 556,605,950,436,400.31/20,160,019.20
  6. Step 6: Final answer
    x = 27,609,395.85

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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.