Home / 31,400.75-43,303.28-20,626.67

Finding the Fourth Proportional to 31,400.75, 43,303.28 and 20,626.67

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Solution

The fourth proportional to 31,400.75, 43,303.28 and 20,626.67 is: 28,445.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,400.75 : 43,303.28 = 20,626.67 : x
  2. Step 2: Convert to fraction form
    31,400.75/43,303.28 = 20,626.67/x
  3. Step 3: Cross multiply
    31,400.75x = 43,303.28 × 20,626.67
  4. Step 4: Simplify right side
    31,400.75x = 893,202,146.83
  5. Step 5: Solve for x
    x = 893,202,146.83/31,400.75
  6. Step 6: Final answer
    x = 28,445.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.