Home / 15,736.08-21,695.63-12,892.98

Finding the Fourth Proportional to 15,736.08, 21,695.63 and 12,892.98

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Solution

The fourth proportional to 15,736.08, 21,695.63 and 12,892.98 is: 17,775.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,736.08 : 21,695.63 = 12,892.98 : x
  2. Step 2: Convert to fraction form
    15,736.08/21,695.63 = 12,892.98/x
  3. Step 3: Cross multiply
    15,736.08x = 21,695.63 × 12,892.98
  4. Step 4: Simplify right side
    15,736.08x = 279,721,259.21
  5. Step 5: Solve for x
    x = 279,721,259.21/15,736.08
  6. Step 6: Final answer
    x = 17,775.79

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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.