Home / 21,362.31-29,482.74-12,868.83

Finding the Fourth Proportional to 21,362.31, 29,482.74 and 12,868.83

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Solution

The fourth proportional to 21,362.31, 29,482.74 and 12,868.83 is: 17,760.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,362.31 : 29,482.74 = 12,868.83 : x
  2. Step 2: Convert to fraction form
    21,362.31/29,482.74 = 12,868.83/x
  3. Step 3: Cross multiply
    21,362.31x = 29,482.74 × 12,868.83
  4. Step 4: Simplify right side
    21,362.31x = 379,408,368.99
  5. Step 5: Solve for x
    x = 379,408,368.99/21,362.31
  6. Step 6: Final answer
    x = 17,760.64

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1.5x scale

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.