Home / 30,639.05-46,001.78-18,975.05

Finding the Fourth Proportional to 30,639.05, 46,001.78 and 18,975.05

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Solution

The fourth proportional to 30,639.05, 46,001.78 and 18,975.05 is: 28,489.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,639.05 : 46,001.78 = 18,975.05 : x
  2. Step 2: Convert to fraction form
    30,639.05/46,001.78 = 18,975.05/x
  3. Step 3: Cross multiply
    30,639.05x = 46,001.78 × 18,975.05
  4. Step 4: Simplify right side
    30,639.05x = 872,885,980.71
  5. Step 5: Solve for x
    x = 872,885,980.71/30,639.05
  6. Step 6: Final answer
    x = 28,489.33

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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.