Home / 15,702.56-21,688.72-11,741.28

Finding the Fourth Proportional to 15,702.56, 21,688.72 and 11,741.28

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Solution

The fourth proportional to 15,702.56, 21,688.72 and 11,741.28 is: 16,217.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.56 : 21,688.72 = 11,741.28 : x
  2. Step 2: Convert to fraction form
    15,702.56/21,688.72 = 11,741.28/x
  3. Step 3: Cross multiply
    15,702.56x = 21,688.72 × 11,741.28
  4. Step 4: Simplify right side
    15,702.56x = 254,653,334.36
  5. Step 5: Solve for x
    x = 254,653,334.36/15,702.56
  6. Step 6: Final answer
    x = 16,217.31

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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.