Home / 21,448.20-32,157.30-12,678.60

Finding the Fourth Proportional to 21,448.20, 32,157.30 and 12,678.60

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Solution

The fourth proportional to 21,448.20, 32,157.30 and 12,678.60 is: 19,009.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,448.20 : 32,157.30 = 12,678.60 : x
  2. Step 2: Convert to fraction form
    21,448.20/32,157.30 = 12,678.60/x
  3. Step 3: Cross multiply
    21,448.20x = 32,157.30 × 12,678.60
  4. Step 4: Simplify right side
    21,448.20x = 407,709,543.78
  5. Step 5: Solve for x
    x = 407,709,543.78/21,448.20
  6. Step 6: Final answer
    x = 19,009.03

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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.