Home / 23,718.30-35,403.78-20,915.88

Finding the Fourth Proportional to 23,718.30, 35,403.78 and 20,915.88

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Solution

The fourth proportional to 23,718.30, 35,403.78 and 20,915.88 is: 31,220.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,718.30 : 35,403.78 = 20,915.88 : x
  2. Step 2: Convert to fraction form
    23,718.30/35,403.78 = 20,915.88/x
  3. Step 3: Cross multiply
    23,718.30x = 35,403.78 × 20,915.88
  4. Step 4: Simplify right side
    23,718.30x = 740,501,214.03
  5. Step 5: Solve for x
    x = 740,501,214.03/23,718.30
  6. Step 6: Final answer
    x = 31,220.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.