Home / 20,478,788.64-30,719,946.96-5,332,747.68

Finding the Fourth Proportional to 20,478,788.64, 30,719,946.96 and 5,332,747.68

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Solution

The fourth proportional to 20,478,788.64, 30,719,946.96 and 5,332,747.68 is: 7,999,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478,788.64 : 30,719,946.96 = 5,332,747.68 : x
  2. Step 2: Convert to fraction form
    20,478,788.64/30,719,946.96 = 5,332,747.68/x
  3. Step 3: Cross multiply
    20,478,788.64x = 30,719,946.96 × 5,332,747.68
  4. Step 4: Simplify right side
    20,478,788.64x = 163,821,725,880,663.06
  5. Step 5: Solve for x
    x = 163,821,725,880,663.06/20,478,788.64
  6. Step 6: Final answer
    x = 7,999,580.87

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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.