Home / 20,840.23-31,278.02-8,368.69

Finding the Fourth Proportional to 20,840.23, 31,278.02 and 8,368.69

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Solution

The fourth proportional to 20,840.23, 31,278.02 and 8,368.69 is: 12,560.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.23 : 31,278.02 = 8,368.69 : x
  2. Step 2: Convert to fraction form
    20,840.23/31,278.02 = 8,368.69/x
  3. Step 3: Cross multiply
    20,840.23x = 31,278.02 × 8,368.69
  4. Step 4: Simplify right side
    20,840.23x = 261,756,053.19
  5. Step 5: Solve for x
    x = 261,756,053.19/20,840.23
  6. Step 6: Final answer
    x = 12,560.13

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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.