Home / 13,785.64-19,024.61-7,817.56

Finding the Fourth Proportional to 13,785.64, 19,024.61 and 7,817.56

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Solution

The fourth proportional to 13,785.64, 19,024.61 and 7,817.56 is: 10,788.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.64 : 19,024.61 = 7,817.56 : x
  2. Step 2: Convert to fraction form
    13,785.64/19,024.61 = 7,817.56/x
  3. Step 3: Cross multiply
    13,785.64x = 19,024.61 × 7,817.56
  4. Step 4: Simplify right side
    13,785.64x = 148,725,943.50
  5. Step 5: Solve for x
    x = 148,725,943.50/13,785.64
  6. Step 6: Final answer
    x = 10,788.47

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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.