Home / 20,736,138.40-31,100,060.40-9,953,418.40

Finding the Fourth Proportional to 20,736,138.40, 31,100,060.40 and 9,953,418.40

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Solution

The fourth proportional to 20,736,138.40, 31,100,060.40 and 9,953,418.40 is: 14,928,136.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,138.40 : 31,100,060.40 = 9,953,418.40 : x
  2. Step 2: Convert to fraction form
    20,736,138.40/31,100,060.40 = 9,953,418.40/x
  3. Step 3: Cross multiply
    20,736,138.40x = 31,100,060.40 × 9,953,418.40
  4. Step 4: Simplify right side
    20,736,138.40x = 309,551,913,426,471.38
  5. Step 5: Solve for x
    x = 309,551,913,426,471.38/20,736,138.40
  6. Step 6: Final answer
    x = 14,928,136.93

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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.