Home / 11,875.99-16,387.02-6,840.42

Finding the Fourth Proportional to 11,875.99, 16,387.02 and 6,840.42

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Solution

The fourth proportional to 11,875.99, 16,387.02 and 6,840.42 is: 9,438.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,875.99 : 16,387.02 = 6,840.42 : x
  2. Step 2: Convert to fraction form
    11,875.99/16,387.02 = 6,840.42/x
  3. Step 3: Cross multiply
    11,875.99x = 16,387.02 × 6,840.42
  4. Step 4: Simplify right side
    11,875.99x = 112,094,099.35
  5. Step 5: Solve for x
    x = 112,094,099.35/11,875.99
  6. Step 6: Final answer
    x = 9,438.72

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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.