Home / 21,141.04-29,172.85-11,709.40

Finding the Fourth Proportional to 21,141.04, 29,172.85 and 11,709.40

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Solution

The fourth proportional to 21,141.04, 29,172.85 and 11,709.40 is: 16,157.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.04 : 29,172.85 = 11,709.40 : x
  2. Step 2: Convert to fraction form
    21,141.04/29,172.85 = 11,709.40/x
  3. Step 3: Cross multiply
    21,141.04x = 29,172.85 × 11,709.40
  4. Step 4: Simplify right side
    21,141.04x = 341,596,569.79
  5. Step 5: Solve for x
    x = 341,596,569.79/21,141.04
  6. Step 6: Final answer
    x = 16,157.98

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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.