Home / 15,274.89-21,059.69-9,887.78

Finding the Fourth Proportional to 15,274.89, 21,059.69 and 9,887.78

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Solution

The fourth proportional to 15,274.89, 21,059.69 and 9,887.78 is: 13,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,274.89 : 21,059.69 = 9,887.78 : x
  2. Step 2: Convert to fraction form
    15,274.89/21,059.69 = 9,887.78/x
  3. Step 3: Cross multiply
    15,274.89x = 21,059.69 × 9,887.78
  4. Step 4: Simplify right side
    15,274.89x = 208,233,426.85
  5. Step 5: Solve for x
    x = 208,233,426.85/15,274.89
  6. Step 6: Final answer
    x = 13,632.40

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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.