Home / 21,804.90-32,658.40-18,957.12

Finding the Fourth Proportional to 21,804.90, 32,658.40 and 18,957.12

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Solution

The fourth proportional to 21,804.90, 32,658.40 and 18,957.12 is: 28,393.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,804.90 : 32,658.40 = 18,957.12 : x
  2. Step 2: Convert to fraction form
    21,804.90/32,658.40 = 18,957.12/x
  3. Step 3: Cross multiply
    21,804.90x = 32,658.40 × 18,957.12
  4. Step 4: Simplify right side
    21,804.90x = 619,109,207.81
  5. Step 5: Solve for x
    x = 619,109,207.81/21,804.90
  6. Step 6: Final answer
    x = 28,393.12

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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.