Home / 15,825.32-21,838.98-9,538.91

Finding the Fourth Proportional to 15,825.32, 21,838.98 and 9,538.91

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Solution

The fourth proportional to 15,825.32, 21,838.98 and 9,538.91 is: 13,163.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,825.32 : 21,838.98 = 9,538.91 : x
  2. Step 2: Convert to fraction form
    15,825.32/21,838.98 = 9,538.91/x
  3. Step 3: Cross multiply
    15,825.32x = 21,838.98 × 9,538.91
  4. Step 4: Simplify right side
    15,825.32x = 208,320,064.71
  5. Step 5: Solve for x
    x = 208,320,064.71/15,825.32
  6. Step 6: Final answer
    x = 13,163.72

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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.