Home / 13,515.54-18,651.12-7,547.76

Finding the Fourth Proportional to 13,515.54, 18,651.12 and 7,547.76

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Solution

The fourth proportional to 13,515.54, 18,651.12 and 7,547.76 is: 10,415.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.54 : 18,651.12 = 7,547.76 : x
  2. Step 2: Convert to fraction form
    13,515.54/18,651.12 = 7,547.76/x
  3. Step 3: Cross multiply
    13,515.54x = 18,651.12 × 7,547.76
  4. Step 4: Simplify right side
    13,515.54x = 140,774,177.49
  5. Step 5: Solve for x
    x = 140,774,177.49/13,515.54
  6. Step 6: Final answer
    x = 10,415.73

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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.