Home / 30,683.04-42,358.40-18,111.84

Finding the Fourth Proportional to 30,683.04, 42,358.40 and 18,111.84

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Solution

The fourth proportional to 30,683.04, 42,358.40 and 18,111.84 is: 25,003.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,683.04 : 42,358.40 = 18,111.84 : x
  2. Step 2: Convert to fraction form
    30,683.04/42,358.40 = 18,111.84/x
  3. Step 3: Cross multiply
    30,683.04x = 42,358.40 × 18,111.84
  4. Step 4: Simplify right side
    30,683.04x = 767,188,563.46
  5. Step 5: Solve for x
    x = 767,188,563.46/30,683.04
  6. Step 6: Final answer
    x = 25,003.67

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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.