Home / 39,316.34-54,257.51-21,412.31

Finding the Fourth Proportional to 39,316.34, 54,257.51 and 21,412.31

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Solution

The fourth proportional to 39,316.34, 54,257.51 and 21,412.31 is: 29,549.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,316.34 : 54,257.51 = 21,412.31 : x
  2. Step 2: Convert to fraction form
    39,316.34/54,257.51 = 21,412.31/x
  3. Step 3: Cross multiply
    39,316.34x = 54,257.51 × 21,412.31
  4. Step 4: Simplify right side
    39,316.34x = 1,161,778,813.12
  5. Step 5: Solve for x
    x = 1,161,778,813.12/39,316.34
  6. Step 6: Final answer
    x = 29,549.52

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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.