Home / 18,719.76-25,829.50-11,916.52

Finding the Fourth Proportional to 18,719.76, 25,829.50 and 11,916.52

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Solution

The fourth proportional to 18,719.76, 25,829.50 and 11,916.52 is: 16,442.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.76 : 25,829.50 = 11,916.52 : x
  2. Step 2: Convert to fraction form
    18,719.76/25,829.50 = 11,916.52/x
  3. Step 3: Cross multiply
    18,719.76x = 25,829.50 × 11,916.52
  4. Step 4: Simplify right side
    18,719.76x = 307,797,681.32
  5. Step 5: Solve for x
    x = 307,797,681.32/18,719.76
  6. Step 6: Final answer
    x = 16,442.40

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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.