Home / 15,748.15-21,730.21-8,675.02

Finding the Fourth Proportional to 15,748.15, 21,730.21 and 8,675.02

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Solution

The fourth proportional to 15,748.15, 21,730.21 and 8,675.02 is: 11,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.15 : 21,730.21 = 8,675.02 : x
  2. Step 2: Convert to fraction form
    15,748.15/21,730.21 = 8,675.02/x
  3. Step 3: Cross multiply
    15,748.15x = 21,730.21 × 8,675.02
  4. Step 4: Simplify right side
    15,748.15x = 188,510,006.35
  5. Step 5: Solve for x
    x = 188,510,006.35/15,748.15
  6. Step 6: Final answer
    x = 11,970.30

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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.