Home / 21,953.40-30,274.12-20,132.08

Finding the Fourth Proportional to 21,953.40, 30,274.12 and 20,132.08

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Solution

The fourth proportional to 21,953.40, 30,274.12 and 20,132.08 is: 27,762.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.40 : 30,274.12 = 20,132.08 : x
  2. Step 2: Convert to fraction form
    21,953.40/30,274.12 = 20,132.08/x
  3. Step 3: Cross multiply
    21,953.40x = 30,274.12 × 20,132.08
  4. Step 4: Simplify right side
    21,953.40x = 609,481,005.77
  5. Step 5: Solve for x
    x = 609,481,005.77/21,953.40
  6. Step 6: Final answer
    x = 27,762.49

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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.