Home / 21,947.49-30,287.45-11,875.95

Finding the Fourth Proportional to 21,947.49, 30,287.45 and 11,875.95

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Solution

The fourth proportional to 21,947.49, 30,287.45 and 11,875.95 is: 16,388.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.49 : 30,287.45 = 11,875.95 : x
  2. Step 2: Convert to fraction form
    21,947.49/30,287.45 = 11,875.95/x
  3. Step 3: Cross multiply
    21,947.49x = 30,287.45 × 11,875.95
  4. Step 4: Simplify right side
    21,947.49x = 359,692,271.52
  5. Step 5: Solve for x
    x = 359,692,271.52/21,947.49
  6. Step 6: Final answer
    x = 16,388.77

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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.