Home / 13,607.01-20,402.10-8,921.34

Finding the Fourth Proportional to 13,607.01, 20,402.10 and 8,921.34

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Solution

The fourth proportional to 13,607.01, 20,402.10 and 8,921.34 is: 13,376.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.01 : 20,402.10 = 8,921.34 : x
  2. Step 2: Convert to fraction form
    13,607.01/20,402.10 = 8,921.34/x
  3. Step 3: Cross multiply
    13,607.01x = 20,402.10 × 8,921.34
  4. Step 4: Simplify right side
    13,607.01x = 182,014,070.81
  5. Step 5: Solve for x
    x = 182,014,070.81/13,607.01
  6. Step 6: Final answer
    x = 13,376.49

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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.