Home / 28,326.51-42,489.75-13,490.45

Finding the Fourth Proportional to 28,326.51, 42,489.75 and 13,490.45

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Solution

The fourth proportional to 28,326.51, 42,489.75 and 13,490.45 is: 20,235.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,326.51 : 42,489.75 = 13,490.45 : x
  2. Step 2: Convert to fraction form
    28,326.51/42,489.75 = 13,490.45/x
  3. Step 3: Cross multiply
    28,326.51x = 42,489.75 × 13,490.45
  4. Step 4: Simplify right side
    28,326.51x = 573,205,635.44
  5. Step 5: Solve for x
    x = 573,205,635.44/28,326.51
  6. Step 6: Final answer
    x = 20,235.66

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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.