Home / 21,358.86-29,475.27-11,927.76

Finding the Fourth Proportional to 21,358.86, 29,475.27 and 11,927.76

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Solution

The fourth proportional to 21,358.86, 29,475.27 and 11,927.76 is: 16,460.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.86 : 29,475.27 = 11,927.76 : x
  2. Step 2: Convert to fraction form
    21,358.86/29,475.27 = 11,927.76/x
  3. Step 3: Cross multiply
    21,358.86x = 29,475.27 × 11,927.76
  4. Step 4: Simplify right side
    21,358.86x = 351,573,946.50
  5. Step 5: Solve for x
    x = 351,573,946.50/21,358.86
  6. Step 6: Final answer
    x = 16,460.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.