Home / 28,019.10-38,665.83-15,272.40

Finding the Fourth Proportional to 28,019.10, 38,665.83 and 15,272.40

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Solution

The fourth proportional to 28,019.10, 38,665.83 and 15,272.40 is: 21,075.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.10 : 38,665.83 = 15,272.40 : x
  2. Step 2: Convert to fraction form
    28,019.10/38,665.83 = 15,272.40/x
  3. Step 3: Cross multiply
    28,019.10x = 38,665.83 × 15,272.40
  4. Step 4: Simplify right side
    28,019.10x = 590,520,022.09
  5. Step 5: Solve for x
    x = 590,520,022.09/28,019.10
  6. Step 6: Final answer
    x = 21,075.62

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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.