Home / 13,772.23-19,005.30-7,803.74

Finding the Fourth Proportional to 13,772.23, 19,005.30 and 7,803.74

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Solution

The fourth proportional to 13,772.23, 19,005.30 and 7,803.74 is: 10,768.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.23 : 19,005.30 = 7,803.74 : x
  2. Step 2: Convert to fraction form
    13,772.23/19,005.30 = 7,803.74/x
  3. Step 3: Cross multiply
    13,772.23x = 19,005.30 × 7,803.74
  4. Step 4: Simplify right side
    13,772.23x = 148,312,419.82
  5. Step 5: Solve for x
    x = 148,312,419.82/13,772.23
  6. Step 6: Final answer
    x = 10,768.95

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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.