Home / 14,772.46-20,389.86-8,402.78

Finding the Fourth Proportional to 14,772.46, 20,389.86 and 8,402.78

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Solution

The fourth proportional to 14,772.46, 20,389.86 and 8,402.78 is: 11,598.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,772.46 : 20,389.86 = 8,402.78 : x
  2. Step 2: Convert to fraction form
    14,772.46/20,389.86 = 8,402.78/x
  3. Step 3: Cross multiply
    14,772.46x = 20,389.86 × 8,402.78
  4. Step 4: Simplify right side
    14,772.46x = 171,331,507.81
  5. Step 5: Solve for x
    x = 171,331,507.81/14,772.46
  6. Step 6: Final answer
    x = 11,598.03

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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.