Home / 14,219.83-21,329.86-9,320.49

Finding the Fourth Proportional to 14,219.83, 21,329.86 and 9,320.49

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Solution

The fourth proportional to 14,219.83, 21,329.86 and 9,320.49 is: 13,980.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,219.83 : 21,329.86 = 9,320.49 : x
  2. Step 2: Convert to fraction form
    14,219.83/21,329.86 = 9,320.49/x
  3. Step 3: Cross multiply
    14,219.83x = 21,329.86 × 9,320.49
  4. Step 4: Simplify right side
    14,219.83x = 198,804,774.78
  5. Step 5: Solve for x
    x = 198,804,774.78/14,219.83
  6. Step 6: Final answer
    x = 13,980.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.