Home / 39,326.40-54,270.12-21,421.32

Finding the Fourth Proportional to 39,326.40, 54,270.12 and 21,421.32

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Solution

The fourth proportional to 39,326.40, 54,270.12 and 21,421.32 is: 29,561.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,326.40 : 54,270.12 = 21,421.32 : x
  2. Step 2: Convert to fraction form
    39,326.40/54,270.12 = 21,421.32/x
  3. Step 3: Cross multiply
    39,326.40x = 54,270.12 × 21,421.32
  4. Step 4: Simplify right side
    39,326.40x = 1,162,537,606.96
  5. Step 5: Solve for x
    x = 1,162,537,606.96/39,326.40
  6. Step 6: Final answer
    x = 29,561.25

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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.