Home / 28,912.95-43,368.81-13,330.59

Finding the Fourth Proportional to 28,912.95, 43,368.81 and 13,330.59

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Solution

The fourth proportional to 28,912.95, 43,368.81 and 13,330.59 is: 19,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.95 : 43,368.81 = 13,330.59 : x
  2. Step 2: Convert to fraction form
    28,912.95/43,368.81 = 13,330.59/x
  3. Step 3: Cross multiply
    28,912.95x = 43,368.81 × 13,330.59
  4. Step 4: Simplify right side
    28,912.95x = 578,131,824.90
  5. Step 5: Solve for x
    x = 578,131,824.90/28,912.95
  6. Step 6: Final answer
    x = 19,995.60

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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.