Home / 14,289.85-19,719.54-7,916.18

Finding the Fourth Proportional to 14,289.85, 19,719.54 and 7,916.18

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Solution

The fourth proportional to 14,289.85, 19,719.54 and 7,916.18 is: 10,924.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.85 : 19,719.54 = 7,916.18 : x
  2. Step 2: Convert to fraction form
    14,289.85/19,719.54 = 7,916.18/x
  3. Step 3: Cross multiply
    14,289.85x = 19,719.54 × 7,916.18
  4. Step 4: Simplify right side
    14,289.85x = 156,103,388.58
  5. Step 5: Solve for x
    x = 156,103,388.58/14,289.85
  6. Step 6: Final answer
    x = 10,924.07

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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.