Home / 14,774.70-20,390.30-8,403.28

Finding the Fourth Proportional to 14,774.70, 20,390.30 and 8,403.28

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Solution

The fourth proportional to 14,774.70, 20,390.30 and 8,403.28 is: 11,597.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,774.70 : 20,390.30 = 8,403.28 : x
  2. Step 2: Convert to fraction form
    14,774.70/20,390.30 = 8,403.28/x
  3. Step 3: Cross multiply
    14,774.70x = 20,390.30 × 8,403.28
  4. Step 4: Simplify right side
    14,774.70x = 171,345,400.18
  5. Step 5: Solve for x
    x = 171,345,400.18/14,774.70
  6. Step 6: Final answer
    x = 11,597.22

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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.