Home / 21,118.47-31,686.56-9,266.13

Finding the Fourth Proportional to 21,118.47, 31,686.56 and 9,266.13

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Solution

The fourth proportional to 21,118.47, 31,686.56 and 9,266.13 is: 13,903.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.47 : 31,686.56 = 9,266.13 : x
  2. Step 2: Convert to fraction form
    21,118.47/31,686.56 = 9,266.13/x
  3. Step 3: Cross multiply
    21,118.47x = 31,686.56 × 9,266.13
  4. Step 4: Simplify right side
    21,118.47x = 293,611,737.88
  5. Step 5: Solve for x
    x = 293,611,737.88/21,118.47
  6. Step 6: Final answer
    x = 13,903.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.