Home / 13,785.49-19,024.96-7,817.68

Finding the Fourth Proportional to 13,785.49, 19,024.96 and 7,817.68

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Solution

The fourth proportional to 13,785.49, 19,024.96 and 7,817.68 is: 10,788.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.49 : 19,024.96 = 7,817.68 : x
  2. Step 2: Convert to fraction form
    13,785.49/19,024.96 = 7,817.68/x
  3. Step 3: Cross multiply
    13,785.49x = 19,024.96 × 7,817.68
  4. Step 4: Simplify right side
    13,785.49x = 148,730,954.17
  5. Step 5: Solve for x
    x = 148,730,954.17/13,785.49
  6. Step 6: Final answer
    x = 10,788.95

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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.