Home / 21,828.99-30,116.10-14,279.62

Finding the Fourth Proportional to 21,828.99, 30,116.10 and 14,279.62

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Solution

The fourth proportional to 21,828.99, 30,116.10 and 14,279.62 is: 19,700.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.99 : 30,116.10 = 14,279.62 : x
  2. Step 2: Convert to fraction form
    21,828.99/30,116.10 = 14,279.62/x
  3. Step 3: Cross multiply
    21,828.99x = 30,116.10 × 14,279.62
  4. Step 4: Simplify right side
    21,828.99x = 430,046,463.88
  5. Step 5: Solve for x
    x = 430,046,463.88/21,828.99
  6. Step 6: Final answer
    x = 19,700.70

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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.