Home / 15,931.54-21,977.24-9,555.07

Finding the Fourth Proportional to 15,931.54, 21,977.24 and 9,555.07

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Solution

The fourth proportional to 15,931.54, 21,977.24 and 9,555.07 is: 13,181.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.54 : 21,977.24 = 9,555.07 : x
  2. Step 2: Convert to fraction form
    15,931.54/21,977.24 = 9,555.07/x
  3. Step 3: Cross multiply
    15,931.54x = 21,977.24 × 9,555.07
  4. Step 4: Simplify right side
    15,931.54x = 209,993,908.95
  5. Step 5: Solve for x
    x = 209,993,908.95/15,931.54
  6. Step 6: Final answer
    x = 13,181.02

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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.