Home / 14,775.57-20,390.28-9,477.56

Finding the Fourth Proportional to 14,775.57, 20,390.28 and 9,477.56

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Solution

The fourth proportional to 14,775.57, 20,390.28 and 9,477.56 is: 13,079.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.57 : 20,390.28 = 9,477.56 : x
  2. Step 2: Convert to fraction form
    14,775.57/20,390.28 = 9,477.56/x
  3. Step 3: Cross multiply
    14,775.57x = 20,390.28 × 9,477.56
  4. Step 4: Simplify right side
    14,775.57x = 193,250,000.17
  5. Step 5: Solve for x
    x = 193,250,000.17/14,775.57
  6. Step 6: Final answer
    x = 13,079.02

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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.