Home / 12,861.32-19,302.24-5,075.60

Finding the Fourth Proportional to 12,861.32, 19,302.24 and 5,075.60

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Solution

The fourth proportional to 12,861.32, 19,302.24 and 5,075.60 is: 7,617.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.32 : 19,302.24 = 5,075.60 : x
  2. Step 2: Convert to fraction form
    12,861.32/19,302.24 = 5,075.60/x
  3. Step 3: Cross multiply
    12,861.32x = 19,302.24 × 5,075.60
  4. Step 4: Simplify right side
    12,861.32x = 97,970,449.34
  5. Step 5: Solve for x
    x = 97,970,449.34/12,861.32
  6. Step 6: Final answer
    x = 7,617.45

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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.