Home / 21,206.20-29,247.86-14,830.68

Finding the Fourth Proportional to 21,206.20, 29,247.86 and 14,830.68

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Solution

The fourth proportional to 21,206.20, 29,247.86 and 14,830.68 is: 20,454.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206.20 : 29,247.86 = 14,830.68 : x
  2. Step 2: Convert to fraction form
    21,206.20/29,247.86 = 14,830.68/x
  3. Step 3: Cross multiply
    21,206.20x = 29,247.86 × 14,830.68
  4. Step 4: Simplify right side
    21,206.20x = 433,765,652.34
  5. Step 5: Solve for x
    x = 433,765,652.34/21,206.20
  6. Step 6: Final answer
    x = 20,454.66

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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.