Home / 39,655.31-54,724.75-21,506.07

Finding the Fourth Proportional to 39,655.31, 54,724.75 and 21,506.07

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Solution

The fourth proportional to 39,655.31, 54,724.75 and 21,506.07 is: 29,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,655.31 : 54,724.75 = 21,506.07 : x
  2. Step 2: Convert to fraction form
    39,655.31/54,724.75 = 21,506.07/x
  3. Step 3: Cross multiply
    39,655.31x = 54,724.75 × 21,506.07
  4. Step 4: Simplify right side
    39,655.31x = 1,176,914,268.83
  5. Step 5: Solve for x
    x = 1,176,914,268.83/39,655.31
  6. Step 6: Final answer
    x = 29,678.60

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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.