Home / 19,701.86-27,182.66-12,985.08

Finding the Fourth Proportional to 19,701.86, 27,182.66 and 12,985.08

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Solution

The fourth proportional to 19,701.86, 27,182.66 and 12,985.08 is: 17,915.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,701.86 : 27,182.66 = 12,985.08 : x
  2. Step 2: Convert to fraction form
    19,701.86/27,182.66 = 12,985.08/x
  3. Step 3: Cross multiply
    19,701.86x = 27,182.66 × 12,985.08
  4. Step 4: Simplify right side
    19,701.86x = 352,969,014.71
  5. Step 5: Solve for x
    x = 352,969,014.71/19,701.86
  6. Step 6: Final answer
    x = 17,915.52

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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.