Home / 21,337.99-29,437.05-20,349.79

Finding the Fourth Proportional to 21,337.99, 29,437.05 and 20,349.79

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Solution

The fourth proportional to 21,337.99, 29,437.05 and 20,349.79 is: 28,073.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,337.99 : 29,437.05 = 20,349.79 : x
  2. Step 2: Convert to fraction form
    21,337.99/29,437.05 = 20,349.79/x
  3. Step 3: Cross multiply
    21,337.99x = 29,437.05 × 20,349.79
  4. Step 4: Simplify right side
    21,337.99x = 599,037,785.72
  5. Step 5: Solve for x
    x = 599,037,785.72/21,337.99
  6. Step 6: Final answer
    x = 28,073.77

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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.