Home / 19,938.15-29,907.27-18,720.27

Finding the Fourth Proportional to 19,938.15, 29,907.27 and 18,720.27

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Solution

The fourth proportional to 19,938.15, 29,907.27 and 18,720.27 is: 28,080.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.15 : 29,907.27 = 18,720.27 : x
  2. Step 2: Convert to fraction form
    19,938.15/29,907.27 = 18,720.27/x
  3. Step 3: Cross multiply
    19,938.15x = 29,907.27 × 18,720.27
  4. Step 4: Simplify right side
    19,938.15x = 559,872,169.36
  5. Step 5: Solve for x
    x = 559,872,169.36/19,938.15
  6. Step 6: Final answer
    x = 28,080.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.