Home / 14,771.91-20,388.74-8,487.93

Finding the Fourth Proportional to 14,771.91, 20,388.74 and 8,487.93

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Solution

The fourth proportional to 14,771.91, 20,388.74 and 8,487.93 is: 11,715.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,771.91 : 20,388.74 = 8,487.93 : x
  2. Step 2: Convert to fraction form
    14,771.91/20,388.74 = 8,487.93/x
  3. Step 3: Cross multiply
    14,771.91x = 20,388.74 × 8,487.93
  4. Step 4: Simplify right side
    14,771.91x = 173,058,155.47
  5. Step 5: Solve for x
    x = 173,058,155.47/14,771.91
  6. Step 6: Final answer
    x = 11,715.35

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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.