Home / 38,421.81-53,022.06-21,427.56

Finding the Fourth Proportional to 38,421.81, 53,022.06 and 21,427.56

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Solution

The fourth proportional to 38,421.81, 53,022.06 and 21,427.56 is: 29,570.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.81 : 53,022.06 = 21,427.56 : x
  2. Step 2: Convert to fraction form
    38,421.81/53,022.06 = 21,427.56/x
  3. Step 3: Cross multiply
    38,421.81x = 53,022.06 × 21,427.56
  4. Step 4: Simplify right side
    38,421.81x = 1,136,133,371.97
  5. Step 5: Solve for x
    x = 1,136,133,371.97/38,421.81
  6. Step 6: Final answer
    x = 29,570.01

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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.