Home / 28,471,428-39,290,512.32-15,418,683

Finding the Fourth Proportional to 28,471,428, 39,290,512.32 and 15,418,683

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Solution

The fourth proportional to 28,471,428, 39,290,512.32 and 15,418,683 is: 21,277,750.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471,428 : 39,290,512.32 = 15,418,683 : x
  2. Step 2: Convert to fraction form
    28,471,428/39,290,512.32 = 15,418,683/x
  3. Step 3: Cross multiply
    28,471,428x = 39,290,512.32 × 15,418,683
  4. Step 4: Simplify right side
    28,471,428x = 605,807,954,369,674.62
  5. Step 5: Solve for x
    x = 605,807,954,369,674.62/28,471,428
  6. Step 6: Final answer
    x = 21,277,750.96

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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.