Home / 39,708.12-54,797.67-21,802.80

Finding the Fourth Proportional to 39,708.12, 54,797.67 and 21,802.80

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Solution

The fourth proportional to 39,708.12, 54,797.67 and 21,802.80 is: 30,088.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,708.12 : 54,797.67 = 21,802.80 : x
  2. Step 2: Convert to fraction form
    39,708.12/54,797.67 = 21,802.80/x
  3. Step 3: Cross multiply
    39,708.12x = 54,797.67 × 21,802.80
  4. Step 4: Simplify right side
    39,708.12x = 1,194,742,639.48
  5. Step 5: Solve for x
    x = 1,194,742,639.48/39,708.12
  6. Step 6: Final answer
    x = 30,088.12

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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.