Home / 15,748.80-21,736.32-9,782.88

Finding the Fourth Proportional to 15,748.80, 21,736.32 and 9,782.88

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Solution

The fourth proportional to 15,748.80, 21,736.32 and 9,782.88 is: 13,502.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.80 : 21,736.32 = 9,782.88 : x
  2. Step 2: Convert to fraction form
    15,748.80/21,736.32 = 9,782.88/x
  3. Step 3: Cross multiply
    15,748.80x = 21,736.32 × 9,782.88
  4. Step 4: Simplify right side
    15,748.80x = 212,643,810.20
  5. Step 5: Solve for x
    x = 212,643,810.20/15,748.80
  6. Step 6: Final answer
    x = 13,502.22

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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.