Home / 23,430.87-32,335.34-12,820.55

Finding the Fourth Proportional to 23,430.87, 32,335.34 and 12,820.55

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Solution

The fourth proportional to 23,430.87, 32,335.34 and 12,820.55 is: 17,692.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,430.87 : 32,335.34 = 12,820.55 : x
  2. Step 2: Convert to fraction form
    23,430.87/32,335.34 = 12,820.55/x
  3. Step 3: Cross multiply
    23,430.87x = 32,335.34 × 12,820.55
  4. Step 4: Simplify right side
    23,430.87x = 414,556,617.46
  5. Step 5: Solve for x
    x = 414,556,617.46/23,430.87
  6. Step 6: Final answer
    x = 17,692.75

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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.