Home / 21,247.79-29,328.12-14,174.19

Finding the Fourth Proportional to 21,247.79, 29,328.12 and 14,174.19

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Solution

The fourth proportional to 21,247.79, 29,328.12 and 14,174.19 is: 19,564.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.79 : 29,328.12 = 14,174.19 : x
  2. Step 2: Convert to fraction form
    21,247.79/29,328.12 = 14,174.19/x
  3. Step 3: Cross multiply
    21,247.79x = 29,328.12 × 14,174.19
  4. Step 4: Simplify right side
    21,247.79x = 415,702,345.22
  5. Step 5: Solve for x
    x = 415,702,345.22/21,247.79
  6. Step 6: Final answer
    x = 19,564.50

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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.