Home / 15,285.06-21,076.25-9,612.86

Finding the Fourth Proportional to 15,285.06, 21,076.25 and 9,612.86

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Solution

The fourth proportional to 15,285.06, 21,076.25 and 9,612.86 is: 13,254.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.06 : 21,076.25 = 9,612.86 : x
  2. Step 2: Convert to fraction form
    15,285.06/21,076.25 = 9,612.86/x
  3. Step 3: Cross multiply
    15,285.06x = 21,076.25 × 9,612.86
  4. Step 4: Simplify right side
    15,285.06x = 202,602,887.13
  5. Step 5: Solve for x
    x = 202,602,887.13/15,285.06
  6. Step 6: Final answer
    x = 13,254.96

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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.