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Finding the Fourth Proportional to 14,695.83, 20,280.04 and 7,981.54

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Solution

The fourth proportional to 14,695.83, 20,280.04 and 7,981.54 is: 11,014.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,695.83 : 20,280.04 = 7,981.54 : x
  2. Step 2: Convert to fraction form
    14,695.83/20,280.04 = 7,981.54/x
  3. Step 3: Cross multiply
    14,695.83x = 20,280.04 × 7,981.54
  4. Step 4: Simplify right side
    14,695.83x = 161,865,879.81
  5. Step 5: Solve for x
    x = 161,865,879.81/14,695.83
  6. Step 6: Final answer
    x = 11,014.41

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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.