Home / 21,919.56-32,705.88-21,415.32

Finding the Fourth Proportional to 21,919.56, 32,705.88 and 21,415.32

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Solution

The fourth proportional to 21,919.56, 32,705.88 and 21,415.32 is: 31,953.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.56 : 32,705.88 = 21,415.32 : x
  2. Step 2: Convert to fraction form
    21,919.56/32,705.88 = 21,415.32/x
  3. Step 3: Cross multiply
    21,919.56x = 32,705.88 × 21,415.32
  4. Step 4: Simplify right side
    21,919.56x = 700,406,886.08
  5. Step 5: Solve for x
    x = 700,406,886.08/21,919.56
  6. Step 6: Final answer
    x = 31,953.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.