Home / 21,957.02-30,300.71-11,885.43

Finding the Fourth Proportional to 21,957.02, 30,300.71 and 11,885.43

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Solution

The fourth proportional to 21,957.02, 30,300.71 and 11,885.43 is: 16,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.02 : 30,300.71 = 11,885.43 : x
  2. Step 2: Convert to fraction form
    21,957.02/30,300.71 = 11,885.43/x
  3. Step 3: Cross multiply
    21,957.02x = 30,300.71 × 11,885.43
  4. Step 4: Simplify right side
    21,957.02x = 360,136,970.06
  5. Step 5: Solve for x
    x = 360,136,970.06/21,957.02
  6. Step 6: Final answer
    x = 16,401.90

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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.