Home / 15,878,839.60-21,917,732.60-12,621,434.32

Finding the Fourth Proportional to 15,878,839.60, 21,917,732.60 and 12,621,434.32

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Solution

The fourth proportional to 15,878,839.60, 21,917,732.60 and 12,621,434.32 is: 17,421,501.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,878,839.60 : 21,917,732.60 = 12,621,434.32 : x
  2. Step 2: Convert to fraction form
    15,878,839.60/21,917,732.60 = 12,621,434.32/x
  3. Step 3: Cross multiply
    15,878,839.60x = 21,917,732.60 × 12,621,434.32
  4. Step 4: Simplify right side
    15,878,839.60x = 276,633,222,454,222.84
  5. Step 5: Solve for x
    x = 276,633,222,454,222.84/15,878,839.60
  6. Step 6: Final answer
    x = 17,421,501.16

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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.