Home / 31,779.02-47,676.64-18,642.98

Finding the Fourth Proportional to 31,779.02, 47,676.64 and 18,642.98

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Solution

The fourth proportional to 31,779.02, 47,676.64 and 18,642.98 is: 27,969.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,779.02 : 47,676.64 = 18,642.98 : x
  2. Step 2: Convert to fraction form
    31,779.02/47,676.64 = 18,642.98/x
  3. Step 3: Cross multiply
    31,779.02x = 47,676.64 × 18,642.98
  4. Step 4: Simplify right side
    31,779.02x = 888,834,645.99
  5. Step 5: Solve for x
    x = 888,834,645.99/31,779.02
  6. Step 6: Final answer
    x = 27,969.23

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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.