Home / 15,483.98-21,369.30-8,772.68

Finding the Fourth Proportional to 15,483.98, 21,369.30 and 8,772.68

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Solution

The fourth proportional to 15,483.98, 21,369.30 and 8,772.68 is: 12,107.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,483.98 : 21,369.30 = 8,772.68 : x
  2. Step 2: Convert to fraction form
    15,483.98/21,369.30 = 8,772.68/x
  3. Step 3: Cross multiply
    15,483.98x = 21,369.30 × 8,772.68
  4. Step 4: Simplify right side
    15,483.98x = 187,466,030.72
  5. Step 5: Solve for x
    x = 187,466,030.72/15,483.98
  6. Step 6: Final answer
    x = 12,107.10

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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.