Home / 19,764.32-27,275.27-10,812.20

Finding the Fourth Proportional to 19,764.32, 27,275.27 and 10,812.20

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Solution

The fourth proportional to 19,764.32, 27,275.27 and 10,812.20 is: 14,921.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,764.32 : 27,275.27 = 10,812.20 : x
  2. Step 2: Convert to fraction form
    19,764.32/27,275.27 = 10,812.20/x
  3. Step 3: Cross multiply
    19,764.32x = 27,275.27 × 10,812.20
  4. Step 4: Simplify right side
    19,764.32x = 294,905,483.86
  5. Step 5: Solve for x
    x = 294,905,483.86/19,764.32
  6. Step 6: Final answer
    x = 14,921.11

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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.