Home / 21,094.04-29,107.59-12,139.79

Finding the Fourth Proportional to 21,094.04, 29,107.59 and 12,139.79

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Solution

The fourth proportional to 21,094.04, 29,107.59 and 12,139.79 is: 16,751.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,094.04 : 29,107.59 = 12,139.79 : x
  2. Step 2: Convert to fraction form
    21,094.04/29,107.59 = 12,139.79/x
  3. Step 3: Cross multiply
    21,094.04x = 29,107.59 × 12,139.79
  4. Step 4: Simplify right side
    21,094.04x = 353,360,030.01
  5. Step 5: Solve for x
    x = 353,360,030.01/21,094.04
  6. Step 6: Final answer
    x = 16,751.65

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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.