Home / 13,339.61-18,409.85-7,371.23

Finding the Fourth Proportional to 13,339.61, 18,409.85 and 7,371.23

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Solution

The fourth proportional to 13,339.61, 18,409.85 and 7,371.23 is: 10,172.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.61 : 18,409.85 = 7,371.23 : x
  2. Step 2: Convert to fraction form
    13,339.61/18,409.85 = 7,371.23/x
  3. Step 3: Cross multiply
    13,339.61x = 18,409.85 × 7,371.23
  4. Step 4: Simplify right side
    13,339.61x = 135,703,109.71
  5. Step 5: Solve for x
    x = 135,703,109.71/13,339.61
  6. Step 6: Final answer
    x = 10,172.95

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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.