Home / 28,778,670.77-39,714,671.52-15,725,931.71

Finding the Fourth Proportional to 28,778,670.77, 39,714,671.52 and 15,725,931.71

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Solution

The fourth proportional to 28,778,670.77, 39,714,671.52 and 15,725,931.71 is: 21,701,843.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778,670.77 : 39,714,671.52 = 15,725,931.71 : x
  2. Step 2: Convert to fraction form
    28,778,670.77/39,714,671.52 = 15,725,931.71/x
  3. Step 3: Cross multiply
    28,778,670.77x = 39,714,671.52 × 15,725,931.71
  4. Step 4: Simplify right side
    28,778,670.77x = 624,550,212,010,028.62
  5. Step 5: Solve for x
    x = 624,550,212,010,028.62/28,778,670.77
  6. Step 6: Final answer
    x = 21,701,843.60

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1.5x scale

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.