Home / 21,208,818.38-31,783,574-11,472,415.70

Finding the Fourth Proportional to 21,208,818.38, 31,783,574 and 11,472,415.70

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Solution

The fourth proportional to 21,208,818.38, 31,783,574 and 11,472,415.70 is: 17,192,583.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208,818.38 : 31,783,574 = 11,472,415.70 : x
  2. Step 2: Convert to fraction form
    21,208,818.38/31,783,574 = 11,472,415.70/x
  3. Step 3: Cross multiply
    21,208,818.38x = 31,783,574 × 11,472,415.70
  4. Step 4: Simplify right side
    21,208,818.38x = 364,634,373,359,711.75
  5. Step 5: Solve for x
    x = 364,634,373,359,711.75/21,208,818.38
  6. Step 6: Final answer
    x = 17,192,583.14

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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.