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Finding the Fourth Proportional to 14,653.71, 20,222.05 and 7,939.32

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Solution

The fourth proportional to 14,653.71, 20,222.05 and 7,939.32 is: 10,956.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,653.71 : 20,222.05 = 7,939.32 : x
  2. Step 2: Convert to fraction form
    14,653.71/20,222.05 = 7,939.32/x
  3. Step 3: Cross multiply
    14,653.71x = 20,222.05 × 7,939.32
  4. Step 4: Simplify right side
    14,653.71x = 160,549,326.01
  5. Step 5: Solve for x
    x = 160,549,326.01/14,653.71
  6. Step 6: Final answer
    x = 10,956.22

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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.