Home / 38,647.28-53,334.10-21,652.78

Finding the Fourth Proportional to 38,647.28, 53,334.10 and 21,652.78

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Solution

The fourth proportional to 38,647.28, 53,334.10 and 21,652.78 is: 29,881.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,647.28 : 53,334.10 = 21,652.78 : x
  2. Step 2: Convert to fraction form
    38,647.28/53,334.10 = 21,652.78/x
  3. Step 3: Cross multiply
    38,647.28x = 53,334.10 × 21,652.78
  4. Step 4: Simplify right side
    38,647.28x = 1,154,831,533.80
  5. Step 5: Solve for x
    x = 1,154,831,533.80/38,647.28
  6. Step 6: Final answer
    x = 29,881.31

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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.