Home / 21,959.20-30,303.81-12,527.76

Finding the Fourth Proportional to 21,959.20, 30,303.81 and 12,527.76

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Solution

The fourth proportional to 21,959.20, 30,303.81 and 12,527.76 is: 17,288.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.20 : 30,303.81 = 12,527.76 : x
  2. Step 2: Convert to fraction form
    21,959.20/30,303.81 = 12,527.76/x
  3. Step 3: Cross multiply
    21,959.20x = 30,303.81 × 12,527.76
  4. Step 4: Simplify right side
    21,959.20x = 379,638,796.13
  5. Step 5: Solve for x
    x = 379,638,796.13/21,959.20
  6. Step 6: Final answer
    x = 17,288.37

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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.