Home / 38,421.53-53,021.94-21,426.85

Finding the Fourth Proportional to 38,421.53, 53,021.94 and 21,426.85

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Solution

The fourth proportional to 38,421.53, 53,021.94 and 21,426.85 is: 29,569.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.53 : 53,021.94 = 21,426.85 : x
  2. Step 2: Convert to fraction form
    38,421.53/53,021.94 = 21,426.85/x
  3. Step 3: Cross multiply
    38,421.53x = 53,021.94 × 21,426.85
  4. Step 4: Simplify right side
    38,421.53x = 1,136,092,889.98
  5. Step 5: Solve for x
    x = 1,136,092,889.98/38,421.53
  6. Step 6: Final answer
    x = 29,569.17

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Half scale
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Double scale
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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.