Home / 28,019.12-38,666.14-15,272.31

Finding the Fourth Proportional to 28,019.12, 38,666.14 and 15,272.31

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Solution

The fourth proportional to 28,019.12, 38,666.14 and 15,272.31 is: 21,075.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.12 : 38,666.14 = 15,272.31 : x
  2. Step 2: Convert to fraction form
    28,019.12/38,666.14 = 15,272.31/x
  3. Step 3: Cross multiply
    28,019.12x = 38,666.14 × 15,272.31
  4. Step 4: Simplify right side
    28,019.12x = 590,521,276.58
  5. Step 5: Solve for x
    x = 590,521,276.58/28,019.12
  6. Step 6: Final answer
    x = 21,075.65

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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.