Home / 12,281.52-16,948.54-6,978.10

Finding the Fourth Proportional to 12,281.52, 16,948.54 and 6,978.10

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Solution

The fourth proportional to 12,281.52, 16,948.54 and 6,978.10 is: 9,629.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.52 : 16,948.54 = 6,978.10 : x
  2. Step 2: Convert to fraction form
    12,281.52/16,948.54 = 6,978.10/x
  3. Step 3: Cross multiply
    12,281.52x = 16,948.54 × 6,978.10
  4. Step 4: Simplify right side
    12,281.52x = 118,268,606.97
  5. Step 5: Solve for x
    x = 118,268,606.97/12,281.52
  6. Step 6: Final answer
    x = 9,629.80

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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.