Home / 21,089.07-31,658.04-12,330.27

Finding the Fourth Proportional to 21,089.07, 31,658.04 and 12,330.27

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Solution

The fourth proportional to 21,089.07, 31,658.04 and 12,330.27 is: 18,509.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.07 : 31,658.04 = 12,330.27 : x
  2. Step 2: Convert to fraction form
    21,089.07/31,658.04 = 12,330.27/x
  3. Step 3: Cross multiply
    21,089.07x = 31,658.04 × 12,330.27
  4. Step 4: Simplify right side
    21,089.07x = 390,352,180.87
  5. Step 5: Solve for x
    x = 390,352,180.87/21,089.07
  6. Step 6: Final answer
    x = 18,509.69

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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.