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Finding the Fourth Proportional to 9,953.79, 14,813.18 and 9,621.64

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Solution

The fourth proportional to 9,953.79, 14,813.18 and 9,621.64 is: 14,318.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,953.79 : 14,813.18 = 9,621.64 : x
  2. Step 2: Convert to fraction form
    9,953.79/14,813.18 = 9,621.64/x
  3. Step 3: Cross multiply
    9,953.79x = 14,813.18 × 9,621.64
  4. Step 4: Simplify right side
    9,953.79x = 142,527,085.22
  5. Step 5: Solve for x
    x = 142,527,085.22/9,953.79
  6. Step 6: Final answer
    x = 14,318.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.