Home / 20,643.32-30,952.02-13,615.76

Finding the Fourth Proportional to 20,643.32, 30,952.02 and 13,615.76

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Solution

The fourth proportional to 20,643.32, 30,952.02 and 13,615.76 is: 20,415.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643.32 : 30,952.02 = 13,615.76 : x
  2. Step 2: Convert to fraction form
    20,643.32/30,952.02 = 13,615.76/x
  3. Step 3: Cross multiply
    20,643.32x = 30,952.02 × 13,615.76
  4. Step 4: Simplify right side
    20,643.32x = 421,435,275.84
  5. Step 5: Solve for x
    x = 421,435,275.84/20,643.32
  6. Step 6: Final answer
    x = 20,415.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.