Home / 42,935.60-64,408.20-13,353.20

Finding the Fourth Proportional to 42,935.60, 64,408.20 and 13,353.20

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Solution

The fourth proportional to 42,935.60, 64,408.20 and 13,353.20 is: 20,031.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,935.60 : 64,408.20 = 13,353.20 : x
  2. Step 2: Convert to fraction form
    42,935.60/64,408.20 = 13,353.20/x
  3. Step 3: Cross multiply
    42,935.60x = 64,408.20 × 13,353.20
  4. Step 4: Simplify right side
    42,935.60x = 860,055,576.24
  5. Step 5: Solve for x
    x = 860,055,576.24/42,935.60
  6. Step 6: Final answer
    x = 20,031.29

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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.