Home / 21,082,062.80-31,652,585.40-13,119,438.80

Finding the Fourth Proportional to 21,082,062.80, 31,652,585.40 and 13,119,438.80

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Solution

The fourth proportional to 21,082,062.80, 31,652,585.40 and 13,119,438.80 is: 19,697,510.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082,062.80 : 31,652,585.40 = 13,119,438.80 : x
  2. Step 2: Convert to fraction form
    21,082,062.80/31,652,585.40 = 13,119,438.80/x
  3. Step 3: Cross multiply
    21,082,062.80x = 31,652,585.40 × 13,119,438.80
  4. Step 4: Simplify right side
    21,082,062.80x = 415,264,157,017,073.50
  5. Step 5: Solve for x
    x = 415,264,157,017,073.50/21,082,062.80
  6. Step 6: Final answer
    x = 19,697,510.67

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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.