Home / 39,666.53-54,739.58-21,761.15

Finding the Fourth Proportional to 39,666.53, 54,739.58 and 21,761.15

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Solution

The fourth proportional to 39,666.53, 54,739.58 and 21,761.15 is: 30,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,666.53 : 54,739.58 = 21,761.15 : x
  2. Step 2: Convert to fraction form
    39,666.53/54,739.58 = 21,761.15/x
  3. Step 3: Cross multiply
    39,666.53x = 54,739.58 × 21,761.15
  4. Step 4: Simplify right side
    39,666.53x = 1,191,195,828.81
  5. Step 5: Solve for x
    x = 1,191,195,828.81/39,666.53
  6. Step 6: Final answer
    x = 30,030.25

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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.