Home / 21,762.04-30,031.56-12,330.58

Finding the Fourth Proportional to 21,762.04, 30,031.56 and 12,330.58

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Solution

The fourth proportional to 21,762.04, 30,031.56 and 12,330.58 is: 17,016.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,762.04 : 30,031.56 = 12,330.58 : x
  2. Step 2: Convert to fraction form
    21,762.04/30,031.56 = 12,330.58/x
  3. Step 3: Cross multiply
    21,762.04x = 30,031.56 × 12,330.58
  4. Step 4: Simplify right side
    21,762.04x = 370,306,553.10
  5. Step 5: Solve for x
    x = 370,306,553.10/21,762.04
  6. Step 6: Final answer
    x = 17,016.17

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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.