Home / 28,991,020.50-40,006,588.50-15,938,184.78

Finding the Fourth Proportional to 28,991,020.50, 40,006,588.50 and 15,938,184.78

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Solution

The fourth proportional to 28,991,020.50, 40,006,588.50 and 15,938,184.78 is: 21,994,134.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991,020.50 : 40,006,588.50 = 15,938,184.78 : x
  2. Step 2: Convert to fraction form
    28,991,020.50/40,006,588.50 = 15,938,184.78/x
  3. Step 3: Cross multiply
    28,991,020.50x = 40,006,588.50 × 15,938,184.78
  4. Step 4: Simplify right side
    28,991,020.50x = 637,632,399,930,423
  5. Step 5: Solve for x
    x = 637,632,399,930,423/28,991,020.50
  6. Step 6: Final answer
    x = 21,994,134.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.