Home / 22,619.10-31,225.05-15,078

Finding the Fourth Proportional to 22,619.10, 31,225.05 and 15,078

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Solution

The fourth proportional to 22,619.10, 31,225.05 and 15,078 is: 20,814.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,619.10 : 31,225.05 = 15,078 : x
  2. Step 2: Convert to fraction form
    22,619.10/31,225.05 = 15,078/x
  3. Step 3: Cross multiply
    22,619.10x = 31,225.05 × 15,078
  4. Step 4: Simplify right side
    22,619.10x = 470,811,303.90
  5. Step 5: Solve for x
    x = 470,811,303.90/22,619.10
  6. Step 6: Final answer
    x = 20,814.77

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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.