Home / 15,741.36-21,702.90-12,898.26

Finding the Fourth Proportional to 15,741.36, 21,702.90 and 12,898.26

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Solution

The fourth proportional to 15,741.36, 21,702.90 and 12,898.26 is: 17,783.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.36 : 21,702.90 = 12,898.26 : x
  2. Step 2: Convert to fraction form
    15,741.36/21,702.90 = 12,898.26/x
  3. Step 3: Cross multiply
    15,741.36x = 21,702.90 × 12,898.26
  4. Step 4: Simplify right side
    15,741.36x = 279,929,646.95
  5. Step 5: Solve for x
    x = 279,929,646.95/15,741.36
  6. Step 6: Final answer
    x = 17,783.07

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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.