Home / 13,218.36-19,830.59-7,676.34

Finding the Fourth Proportional to 13,218.36, 19,830.59 and 7,676.34

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Solution

The fourth proportional to 13,218.36, 19,830.59 and 7,676.34 is: 11,516.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.36 : 19,830.59 = 7,676.34 : x
  2. Step 2: Convert to fraction form
    13,218.36/19,830.59 = 7,676.34/x
  3. Step 3: Cross multiply
    13,218.36x = 19,830.59 × 7,676.34
  4. Step 4: Simplify right side
    13,218.36x = 152,226,312.86
  5. Step 5: Solve for x
    x = 152,226,312.86/13,218.36
  6. Step 6: Final answer
    x = 11,516.28

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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.