Home / 30,987.93-42,763.65-18,410.25

Finding the Fourth Proportional to 30,987.93, 42,763.65 and 18,410.25

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Solution

The fourth proportional to 30,987.93, 42,763.65 and 18,410.25 is: 25,406.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,987.93 : 42,763.65 = 18,410.25 : x
  2. Step 2: Convert to fraction form
    30,987.93/42,763.65 = 18,410.25/x
  3. Step 3: Cross multiply
    30,987.93x = 42,763.65 × 18,410.25
  4. Step 4: Simplify right side
    30,987.93x = 787,289,487.41
  5. Step 5: Solve for x
    x = 787,289,487.41/30,987.93
  6. Step 6: Final answer
    x = 25,406.33

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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.