Home / 20,664,139.80-30,996,209.70-18,144,715.80

Finding the Fourth Proportional to 20,664,139.80, 30,996,209.70 and 18,144,715.80

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Solution

The fourth proportional to 20,664,139.80, 30,996,209.70 and 18,144,715.80 is: 27,217,073.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664,139.80 : 30,996,209.70 = 18,144,715.80 : x
  2. Step 2: Convert to fraction form
    20,664,139.80/30,996,209.70 = 18,144,715.80/x
  3. Step 3: Cross multiply
    20,664,139.80x = 30,996,209.70 × 18,144,715.80
  4. Step 4: Simplify right side
    20,664,139.80x = 562,417,415,883,703.25
  5. Step 5: Solve for x
    x = 562,417,415,883,703.25/20,664,139.80
  6. Step 6: Final answer
    x = 27,217,073.70

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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.