Home / 20,202,430.90-30,285,931.65-12,118,622.80

Finding the Fourth Proportional to 20,202,430.90, 30,285,931.65 and 12,118,622.80

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Solution

The fourth proportional to 20,202,430.90, 30,285,931.65 and 12,118,622.80 is: 18,167,307.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202,430.90 : 30,285,931.65 = 12,118,622.80 : x
  2. Step 2: Convert to fraction form
    20,202,430.90/30,285,931.65 = 12,118,622.80/x
  3. Step 3: Cross multiply
    20,202,430.90x = 30,285,931.65 × 12,118,622.80
  4. Step 4: Simplify right side
    20,202,430.90x = 367,023,781,812,931.62
  5. Step 5: Solve for x
    x = 367,023,781,812,931.62/20,202,430.90
  6. Step 6: Final answer
    x = 18,167,307.87

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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.