Home / 15,359.25-21,196.63-9,389.95

Finding the Fourth Proportional to 15,359.25, 21,196.63 and 9,389.95

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Solution

The fourth proportional to 15,359.25, 21,196.63 and 9,389.95 is: 12,958.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.25 : 21,196.63 = 9,389.95 : x
  2. Step 2: Convert to fraction form
    15,359.25/21,196.63 = 9,389.95/x
  3. Step 3: Cross multiply
    15,359.25x = 21,196.63 × 9,389.95
  4. Step 4: Simplify right side
    15,359.25x = 199,035,295.87
  5. Step 5: Solve for x
    x = 199,035,295.87/15,359.25
  6. Step 6: Final answer
    x = 12,958.66

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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.