Home / 15,643.32-21,598.83-9,676.86

Finding the Fourth Proportional to 15,643.32, 21,598.83 and 9,676.86

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Solution

The fourth proportional to 15,643.32, 21,598.83 and 9,676.86 is: 13,360.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.32 : 21,598.83 = 9,676.86 : x
  2. Step 2: Convert to fraction form
    15,643.32/21,598.83 = 9,676.86/x
  3. Step 3: Cross multiply
    15,643.32x = 21,598.83 × 9,676.86
  4. Step 4: Simplify right side
    15,643.32x = 209,008,854.07
  5. Step 5: Solve for x
    x = 209,008,854.07/15,643.32
  6. Step 6: Final answer
    x = 13,360.90

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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.