Home / 15,045.41-20,762.89-8,239.32

Finding the Fourth Proportional to 15,045.41, 20,762.89 and 8,239.32

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Solution

The fourth proportional to 15,045.41, 20,762.89 and 8,239.32 is: 11,370.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,045.41 : 20,762.89 = 8,239.32 : x
  2. Step 2: Convert to fraction form
    15,045.41/20,762.89 = 8,239.32/x
  3. Step 3: Cross multiply
    15,045.41x = 20,762.89 × 8,239.32
  4. Step 4: Simplify right side
    15,045.41x = 171,072,094.83
  5. Step 5: Solve for x
    x = 171,072,094.83/15,045.41
  6. Step 6: Final answer
    x = 11,370.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.