Home / 21,098.07-31,671.54-12,339.27

Finding the Fourth Proportional to 21,098.07, 31,671.54 and 12,339.27

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Solution

The fourth proportional to 21,098.07, 31,671.54 and 12,339.27 is: 18,523.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.07 : 31,671.54 = 12,339.27 : x
  2. Step 2: Convert to fraction form
    21,098.07/31,671.54 = 12,339.27/x
  3. Step 3: Cross multiply
    21,098.07x = 31,671.54 × 12,339.27
  4. Step 4: Simplify right side
    21,098.07x = 390,803,683.38
  5. Step 5: Solve for x
    x = 390,803,683.38/21,098.07
  6. Step 6: Final answer
    x = 18,523.20

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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.