Home / 28,419.88-42,656.08-14,389.76

Finding the Fourth Proportional to 28,419.88, 42,656.08 and 14,389.76

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Solution

The fourth proportional to 28,419.88, 42,656.08 and 14,389.76 is: 21,597.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,419.88 : 42,656.08 = 14,389.76 : x
  2. Step 2: Convert to fraction form
    28,419.88/42,656.08 = 14,389.76/x
  3. Step 3: Cross multiply
    28,419.88x = 42,656.08 × 14,389.76
  4. Step 4: Simplify right side
    28,419.88x = 613,810,753.74
  5. Step 5: Solve for x
    x = 613,810,753.74/28,419.88
  6. Step 6: Final answer
    x = 21,597.94

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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.