Home / 30,427.24-42,018.32-28,770.58

Finding the Fourth Proportional to 30,427.24, 42,018.32 and 28,770.58

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Solution

The fourth proportional to 30,427.24, 42,018.32 and 28,770.58 is: 39,730.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,427.24 : 42,018.32 = 28,770.58 : x
  2. Step 2: Convert to fraction form
    30,427.24/42,018.32 = 28,770.58/x
  3. Step 3: Cross multiply
    30,427.24x = 42,018.32 × 28,770.58
  4. Step 4: Simplify right side
    30,427.24x = 1,208,891,437.03
  5. Step 5: Solve for x
    x = 1,208,891,437.03/30,427.24
  6. Step 6: Final answer
    x = 39,730.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.