Home / 28,778,672.98-39,714,671.82-15,725,931.76

Finding the Fourth Proportional to 28,778,672.98, 39,714,671.82 and 15,725,931.76

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Solution

The fourth proportional to 28,778,672.98, 39,714,671.82 and 15,725,931.76 is: 21,701,842.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778,672.98 : 39,714,671.82 = 15,725,931.76 : x
  2. Step 2: Convert to fraction form
    28,778,672.98/39,714,671.82 = 15,725,931.76/x
  3. Step 3: Cross multiply
    28,778,672.98x = 39,714,671.82 × 15,725,931.76
  4. Step 4: Simplify right side
    28,778,672.98x = 624,550,218,912,115
  5. Step 5: Solve for x
    x = 624,550,218,912,115/28,778,672.98
  6. Step 6: Final answer
    x = 21,701,842.17

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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.