Home / 28,421.39-42,619.13-13,637.27

Finding the Fourth Proportional to 28,421.39, 42,619.13 and 13,637.27

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Solution

The fourth proportional to 28,421.39, 42,619.13 and 13,637.27 is: 20,449.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.39 : 42,619.13 = 13,637.27 : x
  2. Step 2: Convert to fraction form
    28,421.39/42,619.13 = 13,637.27/x
  3. Step 3: Cross multiply
    28,421.39x = 42,619.13 × 13,637.27
  4. Step 4: Simplify right side
    28,421.39x = 581,208,672.48
  5. Step 5: Solve for x
    x = 581,208,672.48/28,421.39
  6. Step 6: Final answer
    x = 20,449.69

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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.