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Finding the Fourth Proportional to 35,530.60, 53,230.30 and 20,746.60

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Solution

The fourth proportional to 35,530.60, 53,230.30 and 20,746.60 is: 31,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,530.60 : 53,230.30 = 20,746.60 : x
  2. Step 2: Convert to fraction form
    35,530.60/53,230.30 = 20,746.60/x
  3. Step 3: Cross multiply
    35,530.60x = 53,230.30 × 20,746.60
  4. Step 4: Simplify right side
    35,530.60x = 1,104,347,741.98
  5. Step 5: Solve for x
    x = 1,104,347,741.98/35,530.60
  6. Step 6: Final answer
    x = 31,081.60

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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.