Home / 15,679,677.66-21,638,569.30-10,728,504.74

Finding the Fourth Proportional to 15,679,677.66, 21,638,569.30 and 10,728,504.74

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Solution

The fourth proportional to 15,679,677.66, 21,638,569.30 and 10,728,504.74 is: 14,805,756.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679,677.66 : 21,638,569.30 = 10,728,504.74 : x
  2. Step 2: Convert to fraction form
    15,679,677.66/21,638,569.30 = 10,728,504.74/x
  3. Step 3: Cross multiply
    15,679,677.66x = 21,638,569.30 × 10,728,504.74
  4. Step 4: Simplify right side
    15,679,677.66x = 232,149,493,301,868.50
  5. Step 5: Solve for x
    x = 232,149,493,301,868.50/15,679,677.66
  6. Step 6: Final answer
    x = 14,805,756.75

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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.