Home / 12,876.48-19,312.80-5,090.64

Finding the Fourth Proportional to 12,876.48, 19,312.80 and 5,090.64

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Solution

The fourth proportional to 12,876.48, 19,312.80 and 5,090.64 is: 7,635.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.48 : 19,312.80 = 5,090.64 : x
  2. Step 2: Convert to fraction form
    12,876.48/19,312.80 = 5,090.64/x
  3. Step 3: Cross multiply
    12,876.48x = 19,312.80 × 5,090.64
  4. Step 4: Simplify right side
    12,876.48x = 98,314,512.19
  5. Step 5: Solve for x
    x = 98,314,512.19/12,876.48
  6. Step 6: Final answer
    x = 7,635.20

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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.