Home / 19,557.50-26,979.40-12,375.31

Finding the Fourth Proportional to 19,557.50, 26,979.40 and 12,375.31

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Solution

The fourth proportional to 19,557.50, 26,979.40 and 12,375.31 is: 17,071.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,557.50 : 26,979.40 = 12,375.31 : x
  2. Step 2: Convert to fraction form
    19,557.50/26,979.40 = 12,375.31/x
  3. Step 3: Cross multiply
    19,557.50x = 26,979.40 × 12,375.31
  4. Step 4: Simplify right side
    19,557.50x = 333,878,438.61
  5. Step 5: Solve for x
    x = 333,878,438.61/19,557.50
  6. Step 6: Final answer
    x = 17,071.63

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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.