Home / 21,240.56-29,320.10-14,164.40

Finding the Fourth Proportional to 21,240.56, 29,320.10 and 14,164.40

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Solution

The fourth proportional to 21,240.56, 29,320.10 and 14,164.40 is: 19,552.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.56 : 29,320.10 = 14,164.40 : x
  2. Step 2: Convert to fraction form
    21,240.56/29,320.10 = 14,164.40/x
  3. Step 3: Cross multiply
    21,240.56x = 29,320.10 × 14,164.40
  4. Step 4: Simplify right side
    21,240.56x = 415,301,624.44
  5. Step 5: Solve for x
    x = 415,301,624.44/21,240.56
  6. Step 6: Final answer
    x = 19,552.29

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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.