Home / 22,085.21-30,478.40-12,655.60

Finding the Fourth Proportional to 22,085.21, 30,478.40 and 12,655.60

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Solution

The fourth proportional to 22,085.21, 30,478.40 and 12,655.60 is: 17,465.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,085.21 : 30,478.40 = 12,655.60 : x
  2. Step 2: Convert to fraction form
    22,085.21/30,478.40 = 12,655.60/x
  3. Step 3: Cross multiply
    22,085.21x = 30,478.40 × 12,655.60
  4. Step 4: Simplify right side
    22,085.21x = 385,722,299.57
  5. Step 5: Solve for x
    x = 385,722,299.57/22,085.21
  6. Step 6: Final answer
    x = 17,465.18

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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.