Home / 30,430.69-45,645.42-13,787.62

Finding the Fourth Proportional to 30,430.69, 45,645.42 and 13,787.62

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Solution

The fourth proportional to 30,430.69, 45,645.42 and 13,787.62 is: 20,681.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,430.69 : 45,645.42 = 13,787.62 : x
  2. Step 2: Convert to fraction form
    30,430.69/45,645.42 = 13,787.62/x
  3. Step 3: Cross multiply
    30,430.69x = 45,645.42 × 13,787.62
  4. Step 4: Simplify right side
    30,430.69x = 629,341,643.29
  5. Step 5: Solve for x
    x = 629,341,643.29/30,430.69
  6. Step 6: Final answer
    x = 20,681.15

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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.