Home / 38,422.28-53,022.98-21,427.60

Finding the Fourth Proportional to 38,422.28, 53,022.98 and 21,427.60

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Solution

The fourth proportional to 38,422.28, 53,022.98 and 21,427.60 is: 29,570.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,422.28 : 53,022.98 = 21,427.60 : x
  2. Step 2: Convert to fraction form
    38,422.28/53,022.98 = 21,427.60/x
  3. Step 3: Cross multiply
    38,422.28x = 53,022.98 × 21,427.60
  4. Step 4: Simplify right side
    38,422.28x = 1,136,155,206.25
  5. Step 5: Solve for x
    x = 1,136,155,206.25/38,422.28
  6. Step 6: Final answer
    x = 29,570.22

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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.