Home / 28,136,812.78-42,205,153.56-18,482,366.89

Finding the Fourth Proportional to 28,136,812.78, 42,205,153.56 and 18,482,366.89

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Solution

The fourth proportional to 28,136,812.78, 42,205,153.56 and 18,482,366.89 is: 27,723,507.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136,812.78 : 42,205,153.56 = 18,482,366.89 : x
  2. Step 2: Convert to fraction form
    28,136,812.78/42,205,153.56 = 18,482,366.89/x
  3. Step 3: Cross multiply
    28,136,812.78x = 42,205,153.56 × 18,482,366.89
  4. Step 4: Simplify right side
    28,136,812.78x = 780,051,132,744,709.75
  5. Step 5: Solve for x
    x = 780,051,132,744,709.75/28,136,812.78
  6. Step 6: Final answer
    x = 27,723,507.24

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1.5x scale

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.