Home / 18,938.76-26,139.92-11,774.08

Finding the Fourth Proportional to 18,938.76, 26,139.92 and 11,774.08

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Solution

The fourth proportional to 18,938.76, 26,139.92 and 11,774.08 is: 16,250.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.76 : 26,139.92 = 11,774.08 : x
  2. Step 2: Convert to fraction form
    18,938.76/26,139.92 = 11,774.08/x
  3. Step 3: Cross multiply
    18,938.76x = 26,139.92 × 11,774.08
  4. Step 4: Simplify right side
    18,938.76x = 307,773,509.27
  5. Step 5: Solve for x
    x = 307,773,509.27/18,938.76
  6. Step 6: Final answer
    x = 16,250.99

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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.