Home / 14,777.69-20,390.42-8,809.91

Finding the Fourth Proportional to 14,777.69, 20,390.42 and 8,809.91

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Solution

The fourth proportional to 14,777.69, 20,390.42 and 8,809.91 is: 12,156.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,777.69 : 20,390.42 = 8,809.91 : x
  2. Step 2: Convert to fraction form
    14,777.69/20,390.42 = 8,809.91/x
  3. Step 3: Cross multiply
    14,777.69x = 20,390.42 × 8,809.91
  4. Step 4: Simplify right side
    14,777.69x = 179,637,794.01
  5. Step 5: Solve for x
    x = 179,637,794.01/14,777.69
  6. Step 6: Final answer
    x = 12,156.02

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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.