Home / 13,312.45-19,968.72-6,290.20

Finding the Fourth Proportional to 13,312.45, 19,968.72 and 6,290.20

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Solution

The fourth proportional to 13,312.45, 19,968.72 and 6,290.20 is: 9,435.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.45 : 19,968.72 = 6,290.20 : x
  2. Step 2: Convert to fraction form
    13,312.45/19,968.72 = 6,290.20/x
  3. Step 3: Cross multiply
    13,312.45x = 19,968.72 × 6,290.20
  4. Step 4: Simplify right side
    13,312.45x = 125,607,242.54
  5. Step 5: Solve for x
    x = 125,607,242.54/13,312.45
  6. Step 6: Final answer
    x = 9,435.32

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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.