Home / 13,947,317.71-20,859,787.54-12,421,075.21

Finding the Fourth Proportional to 13,947,317.71, 20,859,787.54 and 12,421,075.21

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Solution

The fourth proportional to 13,947,317.71, 20,859,787.54 and 12,421,075.21 is: 18,577,119.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947,317.71 : 20,859,787.54 = 12,421,075.21 : x
  2. Step 2: Convert to fraction form
    13,947,317.71/20,859,787.54 = 12,421,075.21/x
  3. Step 3: Cross multiply
    13,947,317.71x = 20,859,787.54 × 12,421,075.21
  4. Step 4: Simplify right side
    13,947,317.71x = 259,100,989,862,337.78
  5. Step 5: Solve for x
    x = 259,100,989,862,337.78/13,947,317.71
  6. Step 6: Final answer
    x = 18,577,119.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.