Home / 35,538.40-53,307.60-20,739.70

Finding the Fourth Proportional to 35,538.40, 53,307.60 and 20,739.70

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Solution

The fourth proportional to 35,538.40, 53,307.60 and 20,739.70 is: 31,109.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,538.40 : 53,307.60 = 20,739.70 : x
  2. Step 2: Convert to fraction form
    35,538.40/53,307.60 = 20,739.70/x
  3. Step 3: Cross multiply
    35,538.40x = 53,307.60 × 20,739.70
  4. Step 4: Simplify right side
    35,538.40x = 1,105,583,631.72
  5. Step 5: Solve for x
    x = 1,105,583,631.72/35,538.40
  6. Step 6: Final answer
    x = 31,109.55

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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.