Home / 21,218.19-31,780.52-14,165.16

Finding the Fourth Proportional to 21,218.19, 31,780.52 and 14,165.16

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Solution

The fourth proportional to 21,218.19, 31,780.52 and 14,165.16 is: 21,216.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.19 : 31,780.52 = 14,165.16 : x
  2. Step 2: Convert to fraction form
    21,218.19/31,780.52 = 14,165.16/x
  3. Step 3: Cross multiply
    21,218.19x = 31,780.52 × 14,165.16
  4. Step 4: Simplify right side
    21,218.19x = 450,176,150.68
  5. Step 5: Solve for x
    x = 450,176,150.68/21,218.19
  6. Step 6: Final answer
    x = 21,216.52

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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.