Home / 30,525.16-42,129.32-17,782.60

Finding the Fourth Proportional to 30,525.16, 42,129.32 and 17,782.60

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Solution

The fourth proportional to 30,525.16, 42,129.32 and 17,782.60 is: 24,542.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,525.16 : 42,129.32 = 17,782.60 : x
  2. Step 2: Convert to fraction form
    30,525.16/42,129.32 = 17,782.60/x
  3. Step 3: Cross multiply
    30,525.16x = 42,129.32 × 17,782.60
  4. Step 4: Simplify right side
    30,525.16x = 749,168,845.83
  5. Step 5: Solve for x
    x = 749,168,845.83/30,525.16
  6. Step 6: Final answer
    x = 24,542.67

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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.