Home / 21,389.16-32,035.30-10,303.81

Finding the Fourth Proportional to 21,389.16, 32,035.30 and 10,303.81

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Solution

The fourth proportional to 21,389.16, 32,035.30 and 10,303.81 is: 15,432.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.16 : 32,035.30 = 10,303.81 : x
  2. Step 2: Convert to fraction form
    21,389.16/32,035.30 = 10,303.81/x
  3. Step 3: Cross multiply
    21,389.16x = 32,035.30 × 10,303.81
  4. Step 4: Simplify right side
    21,389.16x = 330,085,538.65
  5. Step 5: Solve for x
    x = 330,085,538.65/21,389.16
  6. Step 6: Final answer
    x = 15,432.37

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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.