Home / 14,889.30-20,545.70-8,920.81

Finding the Fourth Proportional to 14,889.30, 20,545.70 and 8,920.81

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Solution

The fourth proportional to 14,889.30, 20,545.70 and 8,920.81 is: 12,309.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,889.30 : 20,545.70 = 8,920.81 : x
  2. Step 2: Convert to fraction form
    14,889.30/20,545.70 = 8,920.81/x
  3. Step 3: Cross multiply
    14,889.30x = 20,545.70 × 8,920.81
  4. Step 4: Simplify right side
    14,889.30x = 183,284,300.55
  5. Step 5: Solve for x
    x = 183,284,300.55/14,889.30
  6. Step 6: Final answer
    x = 12,309.80

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1.5x scale

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.