Home / 14,747.17-20,347.90-8,777.68

Finding the Fourth Proportional to 14,747.17, 20,347.90 and 8,777.68

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Solution

The fourth proportional to 14,747.17, 20,347.90 and 8,777.68 is: 12,111.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,747.17 : 20,347.90 = 8,777.68 : x
  2. Step 2: Convert to fraction form
    14,747.17/20,347.90 = 8,777.68/x
  3. Step 3: Cross multiply
    14,747.17x = 20,347.90 × 8,777.68
  4. Step 4: Simplify right side
    14,747.17x = 178,607,354.87
  5. Step 5: Solve for x
    x = 178,607,354.87/14,747.17
  6. Step 6: Final answer
    x = 12,111.30

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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.