Home / 21,160.42-29,203.20-12,210.89

Finding the Fourth Proportional to 21,160.42, 29,203.20 and 12,210.89

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Solution

The fourth proportional to 21,160.42, 29,203.20 and 12,210.89 is: 16,852.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.42 : 29,203.20 = 12,210.89 : x
  2. Step 2: Convert to fraction form
    21,160.42/29,203.20 = 12,210.89/x
  3. Step 3: Cross multiply
    21,160.42x = 29,203.20 × 12,210.89
  4. Step 4: Simplify right side
    21,160.42x = 356,596,916.83
  5. Step 5: Solve for x
    x = 356,596,916.83/21,160.42
  6. Step 6: Final answer
    x = 16,852.07

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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.