Home / 15,682.55-21,641.81-8,512.30

Finding the Fourth Proportional to 15,682.55, 21,641.81 and 8,512.30

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Solution

The fourth proportional to 15,682.55, 21,641.81 and 8,512.30 is: 11,746.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,682.55 : 21,641.81 = 8,512.30 : x
  2. Step 2: Convert to fraction form
    15,682.55/21,641.81 = 8,512.30/x
  3. Step 3: Cross multiply
    15,682.55x = 21,641.81 × 8,512.30
  4. Step 4: Simplify right side
    15,682.55x = 184,221,482.60
  5. Step 5: Solve for x
    x = 184,221,482.60/15,682.55
  6. Step 6: Final answer
    x = 11,746.91

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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.