Home / 19,421.78-26,785.28-15,166.24

Finding the Fourth Proportional to 19,421.78, 26,785.28 and 15,166.24

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Solution

The fourth proportional to 19,421.78, 26,785.28 and 15,166.24 is: 20,916.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.78 : 26,785.28 = 15,166.24 : x
  2. Step 2: Convert to fraction form
    19,421.78/26,785.28 = 15,166.24/x
  3. Step 3: Cross multiply
    19,421.78x = 26,785.28 × 15,166.24
  4. Step 4: Simplify right side
    19,421.78x = 406,231,955.90
  5. Step 5: Solve for x
    x = 406,231,955.90/19,421.78
  6. Step 6: Final answer
    x = 20,916.31

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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.