Home / 28,459,900.85-39,274,787.93-15,407,159.36

Finding the Fourth Proportional to 28,459,900.85, 39,274,787.93 and 15,407,159.36

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Solution

The fourth proportional to 28,459,900.85, 39,274,787.93 and 15,407,159.36 is: 21,261,947.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459,900.85 : 39,274,787.93 = 15,407,159.36 : x
  2. Step 2: Convert to fraction form
    28,459,900.85/39,274,787.93 = 15,407,159.36/x
  3. Step 3: Cross multiply
    28,459,900.85x = 39,274,787.93 × 15,407,159.36
  4. Step 4: Simplify right side
    28,459,900.85x = 605,112,916,194,304.75
  5. Step 5: Solve for x
    x = 605,112,916,194,304.75/28,459,900.85
  6. Step 6: Final answer
    x = 21,261,947.45

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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.