Home / 21,009.53-29,000.58-18,767.51

Finding the Fourth Proportional to 21,009.53, 29,000.58 and 18,767.51

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Solution

The fourth proportional to 21,009.53, 29,000.58 and 18,767.51 is: 25,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009.53 : 29,000.58 = 18,767.51 : x
  2. Step 2: Convert to fraction form
    21,009.53/29,000.58 = 18,767.51/x
  3. Step 3: Cross multiply
    21,009.53x = 29,000.58 × 18,767.51
  4. Step 4: Simplify right side
    21,009.53x = 544,268,675.16
  5. Step 5: Solve for x
    x = 544,268,675.16/21,009.53
  6. Step 6: Final answer
    x = 25,905.80

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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.