Home / 28,778,685.60-39,714,691.90-15,725,946.48

Finding the Fourth Proportional to 28,778,685.60, 39,714,691.90 and 15,725,946.48

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Solution

The fourth proportional to 28,778,685.60, 39,714,691.90 and 15,725,946.48 is: 21,701,863.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778,685.60 : 39,714,691.90 = 15,725,946.48 : x
  2. Step 2: Convert to fraction form
    28,778,685.60/39,714,691.90 = 15,725,946.48/x
  3. Step 3: Cross multiply
    28,778,685.60x = 39,714,691.90 × 15,725,946.48
  4. Step 4: Simplify right side
    28,778,685.60x = 624,551,119,289,089.50
  5. Step 5: Solve for x
    x = 624,551,119,289,089.50/28,778,685.60
  6. Step 6: Final answer
    x = 21,701,863.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.