Home / 21,438,820.81-32,140,144.12-9,299,144.67

Finding the Fourth Proportional to 21,438,820.81, 32,140,144.12 and 9,299,144.67

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Solution

The fourth proportional to 21,438,820.81, 32,140,144.12 and 9,299,144.67 is: 13,940,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438,820.81 : 32,140,144.12 = 9,299,144.67 : x
  2. Step 2: Convert to fraction form
    21,438,820.81/32,140,144.12 = 9,299,144.67/x
  3. Step 3: Cross multiply
    21,438,820.81x = 32,140,144.12 × 9,299,144.67
  4. Step 4: Simplify right side
    21,438,820.81x = 298,875,849,886,529.88
  5. Step 5: Solve for x
    x = 298,875,849,886,529.88/21,438,820.81
  6. Step 6: Final answer
    x = 13,940,871.68

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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.