Home / 15,871.53-21,904.29-8,799.32

Finding the Fourth Proportional to 15,871.53, 21,904.29 and 8,799.32

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Solution

The fourth proportional to 15,871.53, 21,904.29 and 8,799.32 is: 12,143.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,871.53 : 21,904.29 = 8,799.32 : x
  2. Step 2: Convert to fraction form
    15,871.53/21,904.29 = 8,799.32/x
  3. Step 3: Cross multiply
    15,871.53x = 21,904.29 × 8,799.32
  4. Step 4: Simplify right side
    15,871.53x = 192,742,857.08
  5. Step 5: Solve for x
    x = 192,742,857.08/15,871.53
  6. Step 6: Final answer
    x = 12,143.94

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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.