Home / 30,109.08-45,138.93-11,378.46

Finding the Fourth Proportional to 30,109.08, 45,138.93 and 11,378.46

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Solution

The fourth proportional to 30,109.08, 45,138.93 and 11,378.46 is: 17,058.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,109.08 : 45,138.93 = 11,378.46 : x
  2. Step 2: Convert to fraction form
    30,109.08/45,138.93 = 11,378.46/x
  3. Step 3: Cross multiply
    30,109.08x = 45,138.93 × 11,378.46
  4. Step 4: Simplify right side
    30,109.08x = 513,611,509.45
  5. Step 5: Solve for x
    x = 513,611,509.45/30,109.08
  6. Step 6: Final answer
    x = 17,058.36

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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.