Home / 19,985.12-29,973.92-6,658.32

Finding the Fourth Proportional to 19,985.12, 29,973.92 and 6,658.32

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Solution

The fourth proportional to 19,985.12, 29,973.92 and 6,658.32 is: 9,986.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.12 : 29,973.92 = 6,658.32 : x
  2. Step 2: Convert to fraction form
    19,985.12/29,973.92 = 6,658.32/x
  3. Step 3: Cross multiply
    19,985.12x = 29,973.92 × 6,658.32
  4. Step 4: Simplify right side
    19,985.12x = 199,575,951.01
  5. Step 5: Solve for x
    x = 199,575,951.01/19,985.12
  6. Step 6: Final answer
    x = 9,986.23

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1.5x scale

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.