Home / 28,378.12-39,159.30-16,437.64

Finding the Fourth Proportional to 28,378.12, 39,159.30 and 16,437.64

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Solution

The fourth proportional to 28,378.12, 39,159.30 and 16,437.64 is: 22,682.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378.12 : 39,159.30 = 16,437.64 : x
  2. Step 2: Convert to fraction form
    28,378.12/39,159.30 = 16,437.64/x
  3. Step 3: Cross multiply
    28,378.12x = 39,159.30 × 16,437.64
  4. Step 4: Simplify right side
    28,378.12x = 643,686,476.05
  5. Step 5: Solve for x
    x = 643,686,476.05/28,378.12
  6. Step 6: Final answer
    x = 22,682.49

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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.