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Finding the Fourth Proportional to 19,994.79, 30,010.32 and 10,642.68

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Solution

The fourth proportional to 19,994.79, 30,010.32 and 10,642.68 is: 15,973.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,994.79 : 30,010.32 = 10,642.68 : x
  2. Step 2: Convert to fraction form
    19,994.79/30,010.32 = 10,642.68/x
  3. Step 3: Cross multiply
    19,994.79x = 30,010.32 × 10,642.68
  4. Step 4: Simplify right side
    19,994.79x = 319,390,232.46
  5. Step 5: Solve for x
    x = 319,390,232.46/19,994.79
  6. Step 6: Final answer
    x = 15,973.67

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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.