Home / 15,385.25-21,232.08-8,670.50

Finding the Fourth Proportional to 15,385.25, 21,232.08 and 8,670.50

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Solution

The fourth proportional to 15,385.25, 21,232.08 and 8,670.50 is: 11,965.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.25 : 21,232.08 = 8,670.50 : x
  2. Step 2: Convert to fraction form
    15,385.25/21,232.08 = 8,670.50/x
  3. Step 3: Cross multiply
    15,385.25x = 21,232.08 × 8,670.50
  4. Step 4: Simplify right side
    15,385.25x = 184,092,643.48
  5. Step 5: Solve for x
    x = 184,092,643.48/15,385.25
  6. Step 6: Final answer
    x = 11,965.53

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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.