Home / 38,969.50-53,783.18-21,977.24

Finding the Fourth Proportional to 38,969.50, 53,783.18 and 21,977.24

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Solution

The fourth proportional to 38,969.50, 53,783.18 and 21,977.24 is: 30,331.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,969.50 : 53,783.18 = 21,977.24 : x
  2. Step 2: Convert to fraction form
    38,969.50/53,783.18 = 21,977.24/x
  3. Step 3: Cross multiply
    38,969.50x = 53,783.18 × 21,977.24
  4. Step 4: Simplify right side
    38,969.50x = 1,182,005,854.82
  5. Step 5: Solve for x
    x = 1,182,005,854.82/38,969.50
  6. Step 6: Final answer
    x = 30,331.56

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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.