Home / 21,376.86-29,500.02-11,945.43

Finding the Fourth Proportional to 21,376.86, 29,500.02 and 11,945.43

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Solution

The fourth proportional to 21,376.86, 29,500.02 and 11,945.43 is: 16,484.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.86 : 29,500.02 = 11,945.43 : x
  2. Step 2: Convert to fraction form
    21,376.86/29,500.02 = 11,945.43/x
  3. Step 3: Cross multiply
    21,376.86x = 29,500.02 × 11,945.43
  4. Step 4: Simplify right side
    21,376.86x = 352,390,423.91
  5. Step 5: Solve for x
    x = 352,390,423.91/21,376.86
  6. Step 6: Final answer
    x = 16,484.67

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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.