Home / 14,721.84-20,317.98-8,434.23

Finding the Fourth Proportional to 14,721.84, 20,317.98 and 8,434.23

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Solution

The fourth proportional to 14,721.84, 20,317.98 and 8,434.23 is: 11,640.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,721.84 : 20,317.98 = 8,434.23 : x
  2. Step 2: Convert to fraction form
    14,721.84/20,317.98 = 8,434.23/x
  3. Step 3: Cross multiply
    14,721.84x = 20,317.98 × 8,434.23
  4. Step 4: Simplify right side
    14,721.84x = 171,366,516.46
  5. Step 5: Solve for x
    x = 171,366,516.46/14,721.84
  6. Step 6: Final answer
    x = 11,640.29

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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.