Home / 15,611.78-21,546.34-10,038.98

Finding the Fourth Proportional to 15,611.78, 21,546.34 and 10,038.98

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Solution

The fourth proportional to 15,611.78, 21,546.34 and 10,038.98 is: 13,855.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.78 : 21,546.34 = 10,038.98 : x
  2. Step 2: Convert to fraction form
    15,611.78/21,546.34 = 10,038.98/x
  3. Step 3: Cross multiply
    15,611.78x = 21,546.34 × 10,038.98
  4. Step 4: Simplify right side
    15,611.78x = 216,303,276.33
  5. Step 5: Solve for x
    x = 216,303,276.33/15,611.78
  6. Step 6: Final answer
    x = 13,855.13

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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.