Home / 21,429.70-29,569.46-13,466.28

Finding the Fourth Proportional to 21,429.70, 29,569.46 and 13,466.28

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Solution

The fourth proportional to 21,429.70, 29,569.46 and 13,466.28 is: 18,581.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.70 : 29,569.46 = 13,466.28 : x
  2. Step 2: Convert to fraction form
    21,429.70/29,569.46 = 13,466.28/x
  3. Step 3: Cross multiply
    21,429.70x = 29,569.46 × 13,466.28
  4. Step 4: Simplify right side
    21,429.70x = 398,190,627.81
  5. Step 5: Solve for x
    x = 398,190,627.81/21,429.70
  6. Step 6: Final answer
    x = 18,581.25

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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.