Home / 19,437.90-29,121.65-8,916.72

Finding the Fourth Proportional to 19,437.90, 29,121.65 and 8,916.72

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Solution

The fourth proportional to 19,437.90, 29,121.65 and 8,916.72 is: 13,358.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,437.90 : 29,121.65 = 8,916.72 : x
  2. Step 2: Convert to fraction form
    19,437.90/29,121.65 = 8,916.72/x
  3. Step 3: Cross multiply
    19,437.90x = 29,121.65 × 8,916.72
  4. Step 4: Simplify right side
    19,437.90x = 259,669,576.70
  5. Step 5: Solve for x
    x = 259,669,576.70/19,437.90
  6. Step 6: Final answer
    x = 13,358.93

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1.5x scale

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.