Home / 13,430.35-20,145.42-3,570.32

Finding the Fourth Proportional to 13,430.35, 20,145.42 and 3,570.32

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Solution

The fourth proportional to 13,430.35, 20,145.42 and 3,570.32 is: 5,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.35 : 20,145.42 = 3,570.32 : x
  2. Step 2: Convert to fraction form
    13,430.35/20,145.42 = 3,570.32/x
  3. Step 3: Cross multiply
    13,430.35x = 20,145.42 × 3,570.32
  4. Step 4: Simplify right side
    13,430.35x = 71,925,595.93
  5. Step 5: Solve for x
    x = 71,925,595.93/13,430.35
  6. Step 6: Final answer
    x = 5,355.45

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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.