Home / 20,276.04-27,964.80-12,715.56

Finding the Fourth Proportional to 20,276.04, 27,964.80 and 12,715.56

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Solution

The fourth proportional to 20,276.04, 27,964.80 and 12,715.56 is: 17,537.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.04 : 27,964.80 = 12,715.56 : x
  2. Step 2: Convert to fraction form
    20,276.04/27,964.80 = 12,715.56/x
  3. Step 3: Cross multiply
    20,276.04x = 27,964.80 × 12,715.56
  4. Step 4: Simplify right side
    20,276.04x = 355,588,092.29
  5. Step 5: Solve for x
    x = 355,588,092.29/20,276.04
  6. Step 6: Final answer
    x = 17,537.35

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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.