Home / 30,379.90-45,533.40-15,581.20

Finding the Fourth Proportional to 30,379.90, 45,533.40 and 15,581.20

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Solution

The fourth proportional to 30,379.90, 45,533.40 and 15,581.20 is: 23,353.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,379.90 : 45,533.40 = 15,581.20 : x
  2. Step 2: Convert to fraction form
    30,379.90/45,533.40 = 15,581.20/x
  3. Step 3: Cross multiply
    30,379.90x = 45,533.40 × 15,581.20
  4. Step 4: Simplify right side
    30,379.90x = 709,465,012.08
  5. Step 5: Solve for x
    x = 709,465,012.08/30,379.90
  6. Step 6: Final answer
    x = 23,353.11

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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.