Home / 13,971.50-19,280.76-7,684.10

Finding the Fourth Proportional to 13,971.50, 19,280.76 and 7,684.10

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Solution

The fourth proportional to 13,971.50, 19,280.76 and 7,684.10 is: 10,604.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971.50 : 19,280.76 = 7,684.10 : x
  2. Step 2: Convert to fraction form
    13,971.50/19,280.76 = 7,684.10/x
  3. Step 3: Cross multiply
    13,971.50x = 19,280.76 × 7,684.10
  4. Step 4: Simplify right side
    13,971.50x = 148,155,287.92
  5. Step 5: Solve for x
    x = 148,155,287.92/13,971.50
  6. Step 6: Final answer
    x = 10,604.11

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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.