Home / 35,319.87-53,010.18-20,508.21

Finding the Fourth Proportional to 35,319.87, 53,010.18 and 20,508.21

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Solution

The fourth proportional to 35,319.87, 53,010.18 and 20,508.21 is: 30,779.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,319.87 : 53,010.18 = 20,508.21 : x
  2. Step 2: Convert to fraction form
    35,319.87/53,010.18 = 20,508.21/x
  3. Step 3: Cross multiply
    35,319.87x = 53,010.18 × 20,508.21
  4. Step 4: Simplify right side
    35,319.87x = 1,087,143,903.58
  5. Step 5: Solve for x
    x = 1,087,143,903.58/35,319.87
  6. Step 6: Final answer
    x = 30,779.95

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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.