Home / 12,953.61-19,430.60-5,553.45

Finding the Fourth Proportional to 12,953.61, 19,430.60 and 5,553.45

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Solution

The fourth proportional to 12,953.61, 19,430.60 and 5,553.45 is: 8,330.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,953.61 : 19,430.60 = 5,553.45 : x
  2. Step 2: Convert to fraction form
    12,953.61/19,430.60 = 5,553.45/x
  3. Step 3: Cross multiply
    12,953.61x = 19,430.60 × 5,553.45
  4. Step 4: Simplify right side
    12,953.61x = 107,906,837.80
  5. Step 5: Solve for x
    x = 107,906,837.80/12,953.61
  6. Step 6: Final answer
    x = 8,330.25

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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.