Home / 20,476.80-30,715.18-5,685.71

Finding the Fourth Proportional to 20,476.80, 30,715.18 and 5,685.71

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Solution

The fourth proportional to 20,476.80, 30,715.18 and 5,685.71 is: 8,528.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,476.80 : 30,715.18 = 5,685.71 : x
  2. Step 2: Convert to fraction form
    20,476.80/30,715.18 = 5,685.71/x
  3. Step 3: Cross multiply
    20,476.80x = 30,715.18 × 5,685.71
  4. Step 4: Simplify right side
    20,476.80x = 174,637,643.04
  5. Step 5: Solve for x
    x = 174,637,643.04/20,476.80
  6. Step 6: Final answer
    x = 8,528.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.