Home / 13,157.48-19,739.30-8,999.45

Finding the Fourth Proportional to 13,157.48, 19,739.30 and 8,999.45

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Solution

The fourth proportional to 13,157.48, 19,739.30 and 8,999.45 is: 13,501.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.48 : 19,739.30 = 8,999.45 : x
  2. Step 2: Convert to fraction form
    13,157.48/19,739.30 = 8,999.45/x
  3. Step 3: Cross multiply
    13,157.48x = 19,739.30 × 8,999.45
  4. Step 4: Simplify right side
    13,157.48x = 177,642,841.21
  5. Step 5: Solve for x
    x = 177,642,841.21/13,157.48
  6. Step 6: Final answer
    x = 13,501.28

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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.