Home / 21,949.95-30,289.02-12,877.14

Finding the Fourth Proportional to 21,949.95, 30,289.02 and 12,877.14

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Solution

The fourth proportional to 21,949.95, 30,289.02 and 12,877.14 is: 17,769.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949.95 : 30,289.02 = 12,877.14 : x
  2. Step 2: Convert to fraction form
    21,949.95/30,289.02 = 12,877.14/x
  3. Step 3: Cross multiply
    21,949.95x = 30,289.02 × 12,877.14
  4. Step 4: Simplify right side
    21,949.95x = 390,036,058.92
  5. Step 5: Solve for x
    x = 390,036,058.92/21,949.95
  6. Step 6: Final answer
    x = 17,769.33

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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.