Home / 30,465.06-45,711.21-19,368.78

Finding the Fourth Proportional to 30,465.06, 45,711.21 and 19,368.78

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Solution

The fourth proportional to 30,465.06, 45,711.21 and 19,368.78 is: 29,061.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,465.06 : 45,711.21 = 19,368.78 : x
  2. Step 2: Convert to fraction form
    30,465.06/45,711.21 = 19,368.78/x
  3. Step 3: Cross multiply
    30,465.06x = 45,711.21 × 19,368.78
  4. Step 4: Simplify right side
    30,465.06x = 885,370,370.02
  5. Step 5: Solve for x
    x = 885,370,370.02/30,465.06
  6. Step 6: Final answer
    x = 29,061.83

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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.