Home / 19,921.95-27,495.30-15,134.04

Finding the Fourth Proportional to 19,921.95, 27,495.30 and 15,134.04

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Solution

The fourth proportional to 19,921.95, 27,495.30 and 15,134.04 is: 20,887.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.95 : 27,495.30 = 15,134.04 : x
  2. Step 2: Convert to fraction form
    19,921.95/27,495.30 = 15,134.04/x
  3. Step 3: Cross multiply
    19,921.95x = 27,495.30 × 15,134.04
  4. Step 4: Simplify right side
    19,921.95x = 416,114,941.64
  5. Step 5: Solve for x
    x = 416,114,941.64/19,921.95
  6. Step 6: Final answer
    x = 20,887.26

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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.