Home / 22,685.40-31,307.60-13,611.10

Finding the Fourth Proportional to 22,685.40, 31,307.60 and 13,611.10

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Solution

The fourth proportional to 22,685.40, 31,307.60 and 13,611.10 is: 18,784.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,685.40 : 31,307.60 = 13,611.10 : x
  2. Step 2: Convert to fraction form
    22,685.40/31,307.60 = 13,611.10/x
  3. Step 3: Cross multiply
    22,685.40x = 31,307.60 × 13,611.10
  4. Step 4: Simplify right side
    22,685.40x = 426,130,874.36
  5. Step 5: Solve for x
    x = 426,130,874.36/22,685.40
  6. Step 6: Final answer
    x = 18,784.37

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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.