Home / 12,478,628.40-18,717,942.60-5,760,164.40

Finding the Fourth Proportional to 12,478,628.40, 18,717,942.60 and 5,760,164.40

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Solution

The fourth proportional to 12,478,628.40, 18,717,942.60 and 5,760,164.40 is: 8,640,246.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,628.40 : 18,717,942.60 = 5,760,164.40 : x
  2. Step 2: Convert to fraction form
    12,478,628.40/18,717,942.60 = 5,760,164.40/x
  3. Step 3: Cross multiply
    12,478,628.40x = 18,717,942.60 × 5,760,164.40
  4. Step 4: Simplify right side
    12,478,628.40x = 107,818,426,605,763.45
  5. Step 5: Solve for x
    x = 107,818,426,605,763.45/12,478,628.40
  6. Step 6: Final answer
    x = 8,640,246.60

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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.