Home / 13,915.16-20,870.72-4,555.55

Finding the Fourth Proportional to 13,915.16, 20,870.72 and 4,555.55

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Solution

The fourth proportional to 13,915.16, 20,870.72 and 4,555.55 is: 6,832.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.16 : 20,870.72 = 4,555.55 : x
  2. Step 2: Convert to fraction form
    13,915.16/20,870.72 = 4,555.55/x
  3. Step 3: Cross multiply
    13,915.16x = 20,870.72 × 4,555.55
  4. Step 4: Simplify right side
    13,915.16x = 95,077,504.14
  5. Step 5: Solve for x
    x = 95,077,504.14/13,915.16
  6. Step 6: Final answer
    x = 6,832.66

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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.