Home / 15,825.12-21,838.40-8,752.32

Finding the Fourth Proportional to 15,825.12, 21,838.40 and 8,752.32

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Solution

The fourth proportional to 15,825.12, 21,838.40 and 8,752.32 is: 12,078.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,825.12 : 21,838.40 = 8,752.32 : x
  2. Step 2: Convert to fraction form
    15,825.12/21,838.40 = 8,752.32/x
  3. Step 3: Cross multiply
    15,825.12x = 21,838.40 × 8,752.32
  4. Step 4: Simplify right side
    15,825.12x = 191,136,665.09
  5. Step 5: Solve for x
    x = 191,136,665.09/15,825.12
  6. Step 6: Final answer
    x = 12,078.05

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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.