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Finding the Fourth Proportional to 39,663.56, 59,478.06 and 11,955.08

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Solution

The fourth proportional to 39,663.56, 59,478.06 and 11,955.08 is: 17,927.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,663.56 : 59,478.06 = 11,955.08 : x
  2. Step 2: Convert to fraction form
    39,663.56/59,478.06 = 11,955.08/x
  3. Step 3: Cross multiply
    39,663.56x = 59,478.06 × 11,955.08
  4. Step 4: Simplify right side
    39,663.56x = 711,064,965.54
  5. Step 5: Solve for x
    x = 711,064,965.54/39,663.56
  6. Step 6: Final answer
    x = 17,927.41

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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.