Home / 28,421.06-42,634.88-9,447.39

Finding the Fourth Proportional to 28,421.06, 42,634.88 and 9,447.39

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Solution

The fourth proportional to 28,421.06, 42,634.88 and 9,447.39 is: 14,172.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.06 : 42,634.88 = 9,447.39 : x
  2. Step 2: Convert to fraction form
    28,421.06/42,634.88 = 9,447.39/x
  3. Step 3: Cross multiply
    28,421.06x = 42,634.88 × 9,447.39
  4. Step 4: Simplify right side
    28,421.06x = 402,788,362.58
  5. Step 5: Solve for x
    x = 402,788,362.58/28,421.06
  6. Step 6: Final answer
    x = 14,172.18

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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.