Home / 20,421,457.20-30,591,750.60-13,237,988.40

Finding the Fourth Proportional to 20,421,457.20, 30,591,750.60 and 13,237,988.40

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Solution

The fourth proportional to 20,421,457.20, 30,591,750.60 and 13,237,988.40 is: 19,830,770.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,457.20 : 30,591,750.60 = 13,237,988.40 : x
  2. Step 2: Convert to fraction form
    20,421,457.20/30,591,750.60 = 13,237,988.40/x
  3. Step 3: Cross multiply
    20,421,457.20x = 30,591,750.60 × 13,237,988.40
  4. Step 4: Simplify right side
    20,421,457.20x = 404,973,239,578,493.06
  5. Step 5: Solve for x
    x = 404,973,239,578,493.06/20,421,457.20
  6. Step 6: Final answer
    x = 19,830,770.92

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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.