Home / 13,158.48-19,740.80-9,000.45

Finding the Fourth Proportional to 13,158.48, 19,740.80 and 9,000.45

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Solution

The fourth proportional to 13,158.48, 19,740.80 and 9,000.45 is: 13,502.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.48 : 19,740.80 = 9,000.45 : x
  2. Step 2: Convert to fraction form
    13,158.48/19,740.80 = 9,000.45/x
  3. Step 3: Cross multiply
    13,158.48x = 19,740.80 × 9,000.45
  4. Step 4: Simplify right side
    13,158.48x = 177,676,083.36
  5. Step 5: Solve for x
    x = 177,676,083.36/13,158.48
  6. Step 6: Final answer
    x = 13,502.78

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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.