Home / 22,558.80-31,130.76-12,487.02

Finding the Fourth Proportional to 22,558.80, 31,130.76 and 12,487.02

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Solution

The fourth proportional to 22,558.80, 31,130.76 and 12,487.02 is: 17,231.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,558.80 : 31,130.76 = 12,487.02 : x
  2. Step 2: Convert to fraction form
    22,558.80/31,130.76 = 12,487.02/x
  3. Step 3: Cross multiply
    22,558.80x = 31,130.76 × 12,487.02
  4. Step 4: Simplify right side
    22,558.80x = 388,730,574.65
  5. Step 5: Solve for x
    x = 388,730,574.65/22,558.80
  6. Step 6: Final answer
    x = 17,231.88

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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.