Home / 12,005.44-18,006.08-5,430.10

Finding the Fourth Proportional to 12,005.44, 18,006.08 and 5,430.10

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Solution

The fourth proportional to 12,005.44, 18,006.08 and 5,430.10 is: 8,144.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.44 : 18,006.08 = 5,430.10 : x
  2. Step 2: Convert to fraction form
    12,005.44/18,006.08 = 5,430.10/x
  3. Step 3: Cross multiply
    12,005.44x = 18,006.08 × 5,430.10
  4. Step 4: Simplify right side
    12,005.44x = 97,774,815.01
  5. Step 5: Solve for x
    x = 97,774,815.01/12,005.44
  6. Step 6: Final answer
    x = 8,144.21

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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.