Home / 21,038,156.36-31,533,315.76-8,900,043.92

Finding the Fourth Proportional to 21,038,156.36, 31,533,315.76 and 8,900,043.92

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Solution

The fourth proportional to 21,038,156.36, 31,533,315.76 and 8,900,043.92 is: 13,339,947.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038,156.36 : 31,533,315.76 = 8,900,043.92 : x
  2. Step 2: Convert to fraction form
    21,038,156.36/31,533,315.76 = 8,900,043.92/x
  3. Step 3: Cross multiply
    21,038,156.36x = 31,533,315.76 × 8,900,043.92
  4. Step 4: Simplify right side
    21,038,156.36x = 280,647,895,207,228.19
  5. Step 5: Solve for x
    x = 280,647,895,207,228.19/21,038,156.36
  6. Step 6: Final answer
    x = 13,339,947.21

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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.