Home / 14,887.36-20,545.20-8,920

Finding the Fourth Proportional to 14,887.36, 20,545.20 and 8,920

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Solution

The fourth proportional to 14,887.36, 20,545.20 and 8,920 is: 12,309.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,887.36 : 20,545.20 = 8,920 : x
  2. Step 2: Convert to fraction form
    14,887.36/20,545.20 = 8,920/x
  3. Step 3: Cross multiply
    14,887.36x = 20,545.20 × 8,920
  4. Step 4: Simplify right side
    14,887.36x = 183,263,184
  5. Step 5: Solve for x
    x = 183,263,184/14,887.36
  6. Step 6: Final answer
    x = 12,309.99

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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.