Home / 14,742.32-20,319-10,906.16

Finding the Fourth Proportional to 14,742.32, 20,319 and 10,906.16

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Solution

The fourth proportional to 14,742.32, 20,319 and 10,906.16 is: 15,031.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,742.32 : 20,319 = 10,906.16 : x
  2. Step 2: Convert to fraction form
    14,742.32/20,319 = 10,906.16/x
  3. Step 3: Cross multiply
    14,742.32x = 20,319 × 10,906.16
  4. Step 4: Simplify right side
    14,742.32x = 221,602,265.04
  5. Step 5: Solve for x
    x = 221,602,265.04/14,742.32
  6. Step 6: Final answer
    x = 15,031.71

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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.