Home / 20,570.93-30,850.01-7,421.59

Finding the Fourth Proportional to 20,570.93, 30,850.01 and 7,421.59

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Solution

The fourth proportional to 20,570.93, 30,850.01 and 7,421.59 is: 11,130.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.93 : 30,850.01 = 7,421.59 : x
  2. Step 2: Convert to fraction form
    20,570.93/30,850.01 = 7,421.59/x
  3. Step 3: Cross multiply
    20,570.93x = 30,850.01 × 7,421.59
  4. Step 4: Simplify right side
    20,570.93x = 228,956,125.72
  5. Step 5: Solve for x
    x = 228,956,125.72/20,570.93
  6. Step 6: Final answer
    x = 11,130.08

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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.