Home / 20,979.02-31,457.70-6,186.06

Finding the Fourth Proportional to 20,979.02, 31,457.70 and 6,186.06

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Solution

The fourth proportional to 20,979.02, 31,457.70 and 6,186.06 is: 9,275.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,979.02 : 31,457.70 = 6,186.06 : x
  2. Step 2: Convert to fraction form
    20,979.02/31,457.70 = 6,186.06/x
  3. Step 3: Cross multiply
    20,979.02x = 31,457.70 × 6,186.06
  4. Step 4: Simplify right side
    20,979.02x = 194,599,219.66
  5. Step 5: Solve for x
    x = 194,599,219.66/20,979.02
  6. Step 6: Final answer
    x = 9,275.90

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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.