Home / 21,396-32,107.35-10,303.86

Finding the Fourth Proportional to 21,396, 32,107.35 and 10,303.86

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Solution

The fourth proportional to 21,396, 32,107.35 and 10,303.86 is: 15,462.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396 : 32,107.35 = 10,303.86 : x
  2. Step 2: Convert to fraction form
    21,396/32,107.35 = 10,303.86/x
  3. Step 3: Cross multiply
    21,396x = 32,107.35 × 10,303.86
  4. Step 4: Simplify right side
    21,396x = 330,829,639.37
  5. Step 5: Solve for x
    x = 330,829,639.37/21,396
  6. Step 6: Final answer
    x = 15,462.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.