Home / 15,988.72-22,064.57-8,915.60

Finding the Fourth Proportional to 15,988.72, 22,064.57 and 8,915.60

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Solution

The fourth proportional to 15,988.72, 22,064.57 and 8,915.60 is: 12,303.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.72 : 22,064.57 = 8,915.60 : x
  2. Step 2: Convert to fraction form
    15,988.72/22,064.57 = 8,915.60/x
  3. Step 3: Cross multiply
    15,988.72x = 22,064.57 × 8,915.60
  4. Step 4: Simplify right side
    15,988.72x = 196,718,880.29
  5. Step 5: Solve for x
    x = 196,718,880.29/15,988.72
  6. Step 6: Final answer
    x = 12,303.60

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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.