Home / 13,646.48-18,829.26-7,981.74

Finding the Fourth Proportional to 13,646.48, 18,829.26 and 7,981.74

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Solution

The fourth proportional to 13,646.48, 18,829.26 and 7,981.74 is: 11,013.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,646.48 : 18,829.26 = 7,981.74 : x
  2. Step 2: Convert to fraction form
    13,646.48/18,829.26 = 7,981.74/x
  3. Step 3: Cross multiply
    13,646.48x = 18,829.26 × 7,981.74
  4. Step 4: Simplify right side
    13,646.48x = 150,290,257.71
  5. Step 5: Solve for x
    x = 150,290,257.71/13,646.48
  6. Step 6: Final answer
    x = 11,013.12

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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.