Home / 30,475.80-42,059.52-19,153.76

Finding the Fourth Proportional to 30,475.80, 42,059.52 and 19,153.76

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Solution

The fourth proportional to 30,475.80, 42,059.52 and 19,153.76 is: 26,434.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,475.80 : 42,059.52 = 19,153.76 : x
  2. Step 2: Convert to fraction form
    30,475.80/42,059.52 = 19,153.76/x
  3. Step 3: Cross multiply
    30,475.80x = 42,059.52 × 19,153.76
  4. Step 4: Simplify right side
    30,475.80x = 805,597,951.80
  5. Step 5: Solve for x
    x = 805,597,951.80/30,475.80
  6. Step 6: Final answer
    x = 26,434.02

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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.