Home / 39,707.35-54,797.01-21,803.51

Finding the Fourth Proportional to 39,707.35, 54,797.01 and 21,803.51

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Solution

The fourth proportional to 39,707.35, 54,797.01 and 21,803.51 is: 30,089.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,707.35 : 54,797.01 = 21,803.51 : x
  2. Step 2: Convert to fraction form
    39,707.35/54,797.01 = 21,803.51/x
  3. Step 3: Cross multiply
    39,707.35x = 54,797.01 × 21,803.51
  4. Step 4: Simplify right side
    39,707.35x = 1,194,767,155.51
  5. Step 5: Solve for x
    x = 1,194,767,155.51/39,707.35
  6. Step 6: Final answer
    x = 30,089.32

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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.