Home / 13,776.48-19,009.98-7,806.87

Finding the Fourth Proportional to 13,776.48, 19,009.98 and 7,806.87

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Solution

The fourth proportional to 13,776.48, 19,009.98 and 7,806.87 is: 10,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.48 : 19,009.98 = 7,806.87 : x
  2. Step 2: Convert to fraction form
    13,776.48/19,009.98 = 7,806.87/x
  3. Step 3: Cross multiply
    13,776.48x = 19,009.98 × 7,806.87
  4. Step 4: Simplify right side
    13,776.48x = 148,408,442.56
  5. Step 5: Solve for x
    x = 148,408,442.56/13,776.48
  6. Step 6: Final answer
    x = 10,772.60

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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.