Home / 15,630.03-21,569.19-8,915.64

Finding the Fourth Proportional to 15,630.03, 21,569.19 and 8,915.64

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Solution

The fourth proportional to 15,630.03, 21,569.19 and 8,915.64 is: 12,303.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630.03 : 21,569.19 = 8,915.64 : x
  2. Step 2: Convert to fraction form
    15,630.03/21,569.19 = 8,915.64/x
  3. Step 3: Cross multiply
    15,630.03x = 21,569.19 × 8,915.64
  4. Step 4: Simplify right side
    15,630.03x = 192,303,018.81
  5. Step 5: Solve for x
    x = 192,303,018.81/15,630.03
  6. Step 6: Final answer
    x = 12,303.43

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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.