Home / 12,720.68-19,075.74-4,925

Finding the Fourth Proportional to 12,720.68, 19,075.74 and 4,925

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Solution

The fourth proportional to 12,720.68, 19,075.74 and 4,925 is: 7,385.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.68 : 19,075.74 = 4,925 : x
  2. Step 2: Convert to fraction form
    12,720.68/19,075.74 = 4,925/x
  3. Step 3: Cross multiply
    12,720.68x = 19,075.74 × 4,925
  4. Step 4: Simplify right side
    12,720.68x = 93,948,019.50
  5. Step 5: Solve for x
    x = 93,948,019.50/12,720.68
  6. Step 6: Final answer
    x = 7,385.46

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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.