Home / 39,707.91-54,797.70-21,802.76

Finding the Fourth Proportional to 39,707.91, 54,797.70 and 21,802.76

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Solution

The fourth proportional to 39,707.91, 54,797.70 and 21,802.76 is: 30,088.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,707.91 : 54,797.70 = 21,802.76 : x
  2. Step 2: Convert to fraction form
    39,707.91/54,797.70 = 21,802.76/x
  3. Step 3: Cross multiply
    39,707.91x = 54,797.70 × 21,802.76
  4. Step 4: Simplify right side
    39,707.91x = 1,194,740,827.66
  5. Step 5: Solve for x
    x = 1,194,740,827.66/39,707.91
  6. Step 6: Final answer
    x = 30,088.23

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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.