Home / 21,159.55-29,184.65-15,197.34

Finding the Fourth Proportional to 21,159.55, 29,184.65 and 15,197.34

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Solution

The fourth proportional to 21,159.55, 29,184.65 and 15,197.34 is: 20,961.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.55 : 29,184.65 = 15,197.34 : x
  2. Step 2: Convert to fraction form
    21,159.55/29,184.65 = 15,197.34/x
  3. Step 3: Cross multiply
    21,159.55x = 29,184.65 × 15,197.34
  4. Step 4: Simplify right side
    21,159.55x = 443,529,048.83
  5. Step 5: Solve for x
    x = 443,529,048.83/21,159.55
  6. Step 6: Final answer
    x = 20,961.18

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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.