Home / 19,606.40-27,038.38-15,123.05

Finding the Fourth Proportional to 19,606.40, 27,038.38 and 15,123.05

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Solution

The fourth proportional to 19,606.40, 27,038.38 and 15,123.05 is: 20,855.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,606.40 : 27,038.38 = 15,123.05 : x
  2. Step 2: Convert to fraction form
    19,606.40/27,038.38 = 15,123.05/x
  3. Step 3: Cross multiply
    19,606.40x = 27,038.38 × 15,123.05
  4. Step 4: Simplify right side
    19,606.40x = 408,902,599.66
  5. Step 5: Solve for x
    x = 408,902,599.66/19,606.40
  6. Step 6: Final answer
    x = 20,855.57

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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.