Home / 38,629.64-53,307.66-21,401.30

Finding the Fourth Proportional to 38,629.64, 53,307.66 and 21,401.30

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Solution

The fourth proportional to 38,629.64, 53,307.66 and 21,401.30 is: 29,533.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,629.64 : 53,307.66 = 21,401.30 : x
  2. Step 2: Convert to fraction form
    38,629.64/53,307.66 = 21,401.30/x
  3. Step 3: Cross multiply
    38,629.64x = 53,307.66 × 21,401.30
  4. Step 4: Simplify right side
    38,629.64x = 1,140,853,223.96
  5. Step 5: Solve for x
    x = 1,140,853,223.96/38,629.64
  6. Step 6: Final answer
    x = 29,533.11

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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.