Home / 28,619.04-39,490.52-15,872.07

Finding the Fourth Proportional to 28,619.04, 39,490.52 and 15,872.07

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Solution

The fourth proportional to 28,619.04, 39,490.52 and 15,872.07 is: 21,901.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,619.04 : 39,490.52 = 15,872.07 : x
  2. Step 2: Convert to fraction form
    28,619.04/39,490.52 = 15,872.07/x
  3. Step 3: Cross multiply
    28,619.04x = 39,490.52 × 15,872.07
  4. Step 4: Simplify right side
    28,619.04x = 626,796,218.42
  5. Step 5: Solve for x
    x = 626,796,218.42/28,619.04
  6. Step 6: Final answer
    x = 21,901.37

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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.