Home / 19,431.46-26,819.90-11,368.87

Finding the Fourth Proportional to 19,431.46, 26,819.90 and 11,368.87

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Solution

The fourth proportional to 19,431.46, 26,819.90 and 11,368.87 is: 15,691.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.46 : 26,819.90 = 11,368.87 : x
  2. Step 2: Convert to fraction form
    19,431.46/26,819.90 = 11,368.87/x
  3. Step 3: Cross multiply
    19,431.46x = 26,819.90 × 11,368.87
  4. Step 4: Simplify right side
    19,431.46x = 304,911,875.25
  5. Step 5: Solve for x
    x = 304,911,875.25/19,431.46
  6. Step 6: Final answer
    x = 15,691.66

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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.