Home / 12,307,628.80-18,461,443.20-8,906,406.40

Finding the Fourth Proportional to 12,307,628.80, 18,461,443.20 and 8,906,406.40

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Solution

The fourth proportional to 12,307,628.80, 18,461,443.20 and 8,906,406.40 is: 13,359,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,307,628.80 : 18,461,443.20 = 8,906,406.40 : x
  2. Step 2: Convert to fraction form
    12,307,628.80/18,461,443.20 = 8,906,406.40/x
  3. Step 3: Cross multiply
    12,307,628.80x = 18,461,443.20 × 8,906,406.40
  4. Step 4: Simplify right side
    12,307,628.80x = 164,425,115,869,716.47
  5. Step 5: Solve for x
    x = 164,425,115,869,716.47/12,307,628.80
  6. Step 6: Final answer
    x = 13,359,609.60

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Similar ratio
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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.