Home / 21,000,478.40-31,500,717.60-18,848,142.35

Finding the Fourth Proportional to 21,000,478.40, 31,500,717.60 and 18,848,142.35

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Solution

The fourth proportional to 21,000,478.40, 31,500,717.60 and 18,848,142.35 is: 28,272,213.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,478.40 : 31,500,717.60 = 18,848,142.35 : x
  2. Step 2: Convert to fraction form
    21,000,478.40/31,500,717.60 = 18,848,142.35/x
  3. Step 3: Cross multiply
    21,000,478.40x = 31,500,717.60 × 18,848,142.35
  4. Step 4: Simplify right side
    21,000,478.40x = 593,730,009,451,950.38
  5. Step 5: Solve for x
    x = 593,730,009,451,950.38/21,000,478.40
  6. Step 6: Final answer
    x = 28,272,213.53

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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.