Home / 21,080.15-31,624.37-6,288.74

Finding the Fourth Proportional to 21,080.15, 31,624.37 and 6,288.74

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Solution

The fourth proportional to 21,080.15, 31,624.37 and 6,288.74 is: 9,434.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.15 : 31,624.37 = 6,288.74 : x
  2. Step 2: Convert to fraction form
    21,080.15/31,624.37 = 6,288.74/x
  3. Step 3: Cross multiply
    21,080.15x = 31,624.37 × 6,288.74
  4. Step 4: Simplify right side
    21,080.15x = 198,877,416.79
  5. Step 5: Solve for x
    x = 198,877,416.79/21,080.15
  6. Step 6: Final answer
    x = 9,434.35

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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.