Home / 21,070.14-29,076.90-11,509.74

Finding the Fourth Proportional to 21,070.14, 29,076.90 and 11,509.74

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Solution

The fourth proportional to 21,070.14, 29,076.90 and 11,509.74 is: 15,883.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.14 : 29,076.90 = 11,509.74 : x
  2. Step 2: Convert to fraction form
    21,070.14/29,076.90 = 11,509.74/x
  3. Step 3: Cross multiply
    21,070.14x = 29,076.90 × 11,509.74
  4. Step 4: Simplify right side
    21,070.14x = 334,667,559.01
  5. Step 5: Solve for x
    x = 334,667,559.01/21,070.14
  6. Step 6: Final answer
    x = 15,883.50

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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.