Home / 15,178.90-20,956.63-9,803.75

Finding the Fourth Proportional to 15,178.90, 20,956.63 and 9,803.75

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Solution

The fourth proportional to 15,178.90, 20,956.63 and 9,803.75 is: 13,535.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,178.90 : 20,956.63 = 9,803.75 : x
  2. Step 2: Convert to fraction form
    15,178.90/20,956.63 = 9,803.75/x
  3. Step 3: Cross multiply
    15,178.90x = 20,956.63 × 9,803.75
  4. Step 4: Simplify right side
    15,178.90x = 205,453,561.36
  5. Step 5: Solve for x
    x = 205,453,561.36/15,178.90
  6. Step 6: Final answer
    x = 13,535.48

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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.