Home / 15,628.46-21,567.87-8,915.18

Finding the Fourth Proportional to 15,628.46, 21,567.87 and 8,915.18

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Solution

The fourth proportional to 15,628.46, 21,567.87 and 8,915.18 is: 12,303.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.46 : 21,567.87 = 8,915.18 : x
  2. Step 2: Convert to fraction form
    15,628.46/21,567.87 = 8,915.18/x
  3. Step 3: Cross multiply
    15,628.46x = 21,567.87 × 8,915.18
  4. Step 4: Simplify right side
    15,628.46x = 192,281,443.27
  5. Step 5: Solve for x
    x = 192,281,443.27/15,628.46
  6. Step 6: Final answer
    x = 12,303.29

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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.