Home / 21,060.64-31,590.95-5,478.27

Finding the Fourth Proportional to 21,060.64, 31,590.95 and 5,478.27

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Solution

The fourth proportional to 21,060.64, 31,590.95 and 5,478.27 is: 8,217.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.64 : 31,590.95 = 5,478.27 : x
  2. Step 2: Convert to fraction form
    21,060.64/31,590.95 = 5,478.27/x
  3. Step 3: Cross multiply
    21,060.64x = 31,590.95 × 5,478.27
  4. Step 4: Simplify right side
    21,060.64x = 173,063,607.80
  5. Step 5: Solve for x
    x = 173,063,607.80/21,060.64
  6. Step 6: Final answer
    x = 8,217.39

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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.