Home / 21,528,900.12-29,709,666.06-11,739,319.56

Finding the Fourth Proportional to 21,528,900.12, 29,709,666.06 and 11,739,319.56

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Solution

The fourth proportional to 21,528,900.12, 29,709,666.06 and 11,739,319.56 is: 16,200,143.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,528,900.12 : 29,709,666.06 = 11,739,319.56 : x
  2. Step 2: Convert to fraction form
    21,528,900.12/29,709,666.06 = 11,739,319.56/x
  3. Step 3: Cross multiply
    21,528,900.12x = 29,709,666.06 × 11,739,319.56
  4. Step 4: Simplify right side
    21,528,900.12x = 348,771,263,899,226.12
  5. Step 5: Solve for x
    x = 348,771,263,899,226.12/21,528,900.12
  6. Step 6: Final answer
    x = 16,200,143.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.