Home / 39,319.34-54,261.65-21,415.31

Finding the Fourth Proportional to 39,319.34, 54,261.65 and 21,415.31

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Solution

The fourth proportional to 39,319.34, 54,261.65 and 21,415.31 is: 29,553.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,319.34 : 54,261.65 = 21,415.31 : x
  2. Step 2: Convert to fraction form
    39,319.34/54,261.65 = 21,415.31/x
  3. Step 3: Cross multiply
    39,319.34x = 54,261.65 × 21,415.31
  4. Step 4: Simplify right side
    39,319.34x = 1,162,030,055.86
  5. Step 5: Solve for x
    x = 1,162,030,055.86/39,319.34
  6. Step 6: Final answer
    x = 29,553.65

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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.