Home / 28,643.77-42,960.09-14,408.45

Finding the Fourth Proportional to 28,643.77, 42,960.09 and 14,408.45

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Solution

The fourth proportional to 28,643.77, 42,960.09 and 14,408.45 is: 21,609.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,643.77 : 42,960.09 = 14,408.45 : x
  2. Step 2: Convert to fraction form
    28,643.77/42,960.09 = 14,408.45/x
  3. Step 3: Cross multiply
    28,643.77x = 42,960.09 × 14,408.45
  4. Step 4: Simplify right side
    28,643.77x = 618,988,308.76
  5. Step 5: Solve for x
    x = 618,988,308.76/28,643.77
  6. Step 6: Final answer
    x = 21,609.88

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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.