Home / 19,955.26-29,880.06-12,047.20

Finding the Fourth Proportional to 19,955.26, 29,880.06 and 12,047.20

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Solution

The fourth proportional to 19,955.26, 29,880.06 and 12,047.20 is: 18,038.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,955.26 : 29,880.06 = 12,047.20 : x
  2. Step 2: Convert to fraction form
    19,955.26/29,880.06 = 12,047.20/x
  3. Step 3: Cross multiply
    19,955.26x = 29,880.06 × 12,047.20
  4. Step 4: Simplify right side
    19,955.26x = 359,970,938.95
  5. Step 5: Solve for x
    x = 359,970,938.95/19,955.26
  6. Step 6: Final answer
    x = 18,038.90

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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.