Home / 28,466.12-42,697.56-7,688

Finding the Fourth Proportional to 28,466.12, 42,697.56 and 7,688

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Solution

The fourth proportional to 28,466.12, 42,697.56 and 7,688 is: 11,531.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,466.12 : 42,697.56 = 7,688 : x
  2. Step 2: Convert to fraction form
    28,466.12/42,697.56 = 7,688/x
  3. Step 3: Cross multiply
    28,466.12x = 42,697.56 × 7,688
  4. Step 4: Simplify right side
    28,466.12x = 328,258,841.28
  5. Step 5: Solve for x
    x = 328,258,841.28/28,466.12
  6. Step 6: Final answer
    x = 11,531.56

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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.