Home / 21,802.48-30,089.64-12,852.88

Finding the Fourth Proportional to 21,802.48, 30,089.64 and 12,852.88

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Solution

The fourth proportional to 21,802.48, 30,089.64 and 12,852.88 is: 17,738.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,802.48 : 30,089.64 = 12,852.88 : x
  2. Step 2: Convert to fraction form
    21,802.48/30,089.64 = 12,852.88/x
  3. Step 3: Cross multiply
    21,802.48x = 30,089.64 × 12,852.88
  4. Step 4: Simplify right side
    21,802.48x = 386,738,532.16
  5. Step 5: Solve for x
    x = 386,738,532.16/21,802.48
  6. Step 6: Final answer
    x = 17,738.28

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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.