Home / 19,689.89-29,537.80-7,038.70

Finding the Fourth Proportional to 19,689.89, 29,537.80 and 7,038.70

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Solution

The fourth proportional to 19,689.89, 29,537.80 and 7,038.70 is: 10,559.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.89 : 29,537.80 = 7,038.70 : x
  2. Step 2: Convert to fraction form
    19,689.89/29,537.80 = 7,038.70/x
  3. Step 3: Cross multiply
    19,689.89x = 29,537.80 × 7,038.70
  4. Step 4: Simplify right side
    19,689.89x = 207,907,621.42
  5. Step 5: Solve for x
    x = 207,907,621.42/19,689.89
  6. Step 6: Final answer
    x = 10,559.11

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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.