Home / 15,869.81-21,899.43-8,698.32

Finding the Fourth Proportional to 15,869.81, 21,899.43 and 8,698.32

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Solution

The fourth proportional to 15,869.81, 21,899.43 and 8,698.32 is: 12,003.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.81 : 21,899.43 = 8,698.32 : x
  2. Step 2: Convert to fraction form
    15,869.81/21,899.43 = 8,698.32/x
  3. Step 3: Cross multiply
    15,869.81x = 21,899.43 × 8,698.32
  4. Step 4: Simplify right side
    15,869.81x = 190,488,249.96
  5. Step 5: Solve for x
    x = 190,488,249.96/15,869.81
  6. Step 6: Final answer
    x = 12,003.18

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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.