Home / 28,308.79-42,464.13-12,726.46

Finding the Fourth Proportional to 28,308.79, 42,464.13 and 12,726.46

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Solution

The fourth proportional to 28,308.79, 42,464.13 and 12,726.46 is: 19,090.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,308.79 : 42,464.13 = 12,726.46 : x
  2. Step 2: Convert to fraction form
    28,308.79/42,464.13 = 12,726.46/x
  3. Step 3: Cross multiply
    28,308.79x = 42,464.13 × 12,726.46
  4. Step 4: Simplify right side
    28,308.79x = 540,418,051.88
  5. Step 5: Solve for x
    x = 540,418,051.88/28,308.79
  6. Step 6: Final answer
    x = 19,090.11

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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.