Home / 21,000,754.60-31,438,146.30-12,476,703.40

Finding the Fourth Proportional to 21,000,754.60, 31,438,146.30 and 12,476,703.40

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Solution

The fourth proportional to 21,000,754.60, 31,438,146.30 and 12,476,703.40 is: 18,677,634.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,754.60 : 31,438,146.30 = 12,476,703.40 : x
  2. Step 2: Convert to fraction form
    21,000,754.60/31,438,146.30 = 12,476,703.40/x
  3. Step 3: Cross multiply
    21,000,754.60x = 31,438,146.30 × 12,476,703.40
  4. Step 4: Simplify right side
    21,000,754.60x = 392,244,426,830,907.44
  5. Step 5: Solve for x
    x = 392,244,426,830,907.44/21,000,754.60
  6. Step 6: Final answer
    x = 18,677,634.89

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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.