Home / 30,697.49-42,368.58-19,955.67

Finding the Fourth Proportional to 30,697.49, 42,368.58 and 19,955.67

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Solution

The fourth proportional to 30,697.49, 42,368.58 and 19,955.67 is: 27,542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,697.49 : 42,368.58 = 19,955.67 : x
  2. Step 2: Convert to fraction form
    30,697.49/42,368.58 = 19,955.67/x
  3. Step 3: Cross multiply
    30,697.49x = 42,368.58 × 19,955.67
  4. Step 4: Simplify right side
    30,697.49x = 845,493,400.85
  5. Step 5: Solve for x
    x = 845,493,400.85/30,697.49
  6. Step 6: Final answer
    x = 27,542.76

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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.