Home / 14,085.76-21,122.40-4,221.76

Finding the Fourth Proportional to 14,085.76, 21,122.40 and 4,221.76

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Solution

The fourth proportional to 14,085.76, 21,122.40 and 4,221.76 is: 6,330.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,085.76 : 21,122.40 = 4,221.76 : x
  2. Step 2: Convert to fraction form
    14,085.76/21,122.40 = 4,221.76/x
  3. Step 3: Cross multiply
    14,085.76x = 21,122.40 × 4,221.76
  4. Step 4: Simplify right side
    14,085.76x = 89,173,703.42
  5. Step 5: Solve for x
    x = 89,173,703.42/14,085.76
  6. Step 6: Final answer
    x = 6,330.77

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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.