Home / 21,451.81-32,182.05-7,412.35

Finding the Fourth Proportional to 21,451.81, 32,182.05 and 7,412.35

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Solution

The fourth proportional to 21,451.81, 32,182.05 and 7,412.35 is: 11,120.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.81 : 32,182.05 = 7,412.35 : x
  2. Step 2: Convert to fraction form
    21,451.81/32,182.05 = 7,412.35/x
  3. Step 3: Cross multiply
    21,451.81x = 32,182.05 × 7,412.35
  4. Step 4: Simplify right side
    21,451.81x = 238,544,618.32
  5. Step 5: Solve for x
    x = 238,544,618.32/21,451.81
  6. Step 6: Final answer
    x = 11,120.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.