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Finding the Fourth Proportional to 32,856.40, 45,325.56 and 19,421.20

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Solution

The fourth proportional to 32,856.40, 45,325.56 and 19,421.20 is: 26,791.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,856.40 : 45,325.56 = 19,421.20 : x
  2. Step 2: Convert to fraction form
    32,856.40/45,325.56 = 19,421.20/x
  3. Step 3: Cross multiply
    32,856.40x = 45,325.56 × 19,421.20
  4. Step 4: Simplify right side
    32,856.40x = 880,276,765.87
  5. Step 5: Solve for x
    x = 880,276,765.87/32,856.40
  6. Step 6: Final answer
    x = 26,791.64

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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.