Home / 12,779.12-19,171.52-4,988

Finding the Fourth Proportional to 12,779.12, 19,171.52 and 4,988

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Solution

The fourth proportional to 12,779.12, 19,171.52 and 4,988 is: 7,483.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.12 : 19,171.52 = 4,988 : x
  2. Step 2: Convert to fraction form
    12,779.12/19,171.52 = 4,988/x
  3. Step 3: Cross multiply
    12,779.12x = 19,171.52 × 4,988
  4. Step 4: Simplify right side
    12,779.12x = 95,627,541.76
  5. Step 5: Solve for x
    x = 95,627,541.76/12,779.12
  6. Step 6: Final answer
    x = 7,483.11

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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.