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Finding the Fourth Proportional to 20,510.84, 30,653.86 and 14,975.84

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Solution

The fourth proportional to 20,510.84, 30,653.86 and 14,975.84 is: 22,381.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.84 : 30,653.86 = 14,975.84 : x
  2. Step 2: Convert to fraction form
    20,510.84/30,653.86 = 14,975.84/x
  3. Step 3: Cross multiply
    20,510.84x = 30,653.86 × 14,975.84
  4. Step 4: Simplify right side
    20,510.84x = 459,067,302.74
  5. Step 5: Solve for x
    x = 459,067,302.74/20,510.84
  6. Step 6: Final answer
    x = 22,381.69

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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.