Home / 15,868.91-21,901.43-9,153.23

Finding the Fourth Proportional to 15,868.91, 21,901.43 and 9,153.23

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Solution

The fourth proportional to 15,868.91, 21,901.43 and 9,153.23 is: 12,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.91 : 21,901.43 = 9,153.23 : x
  2. Step 2: Convert to fraction form
    15,868.91/21,901.43 = 9,153.23/x
  3. Step 3: Cross multiply
    15,868.91x = 21,901.43 × 9,153.23
  4. Step 4: Simplify right side
    15,868.91x = 200,468,670.85
  5. Step 5: Solve for x
    x = 200,468,670.85/15,868.91
  6. Step 6: Final answer
    x = 12,632.80

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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.