Home / 21,885.02-30,203.55-12,935.42

Finding the Fourth Proportional to 21,885.02, 30,203.55 and 12,935.42

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Solution

The fourth proportional to 21,885.02, 30,203.55 and 12,935.42 is: 17,852.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.02 : 30,203.55 = 12,935.42 : x
  2. Step 2: Convert to fraction form
    21,885.02/30,203.55 = 12,935.42/x
  3. Step 3: Cross multiply
    21,885.02x = 30,203.55 × 12,935.42
  4. Step 4: Simplify right side
    21,885.02x = 390,695,604.74
  5. Step 5: Solve for x
    x = 390,695,604.74/21,885.02
  6. Step 6: Final answer
    x = 17,852.19

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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.