Home / 15,619.80-23,429.70-12,995.40

Finding the Fourth Proportional to 15,619.80, 23,429.70 and 12,995.40

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Solution

The fourth proportional to 15,619.80, 23,429.70 and 12,995.40 is: 19,493.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,619.80 : 23,429.70 = 12,995.40 : x
  2. Step 2: Convert to fraction form
    15,619.80/23,429.70 = 12,995.40/x
  3. Step 3: Cross multiply
    15,619.80x = 23,429.70 × 12,995.40
  4. Step 4: Simplify right side
    15,619.80x = 304,478,323.38
  5. Step 5: Solve for x
    x = 304,478,323.38/15,619.80
  6. Step 6: Final answer
    x = 19,493.10

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Similar ratio
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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.