Home / 12,159.04-18,225-5,136.94

Finding the Fourth Proportional to 12,159.04, 18,225 and 5,136.94

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Solution

The fourth proportional to 12,159.04, 18,225 and 5,136.94 is: 7,699.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.04 : 18,225 = 5,136.94 : x
  2. Step 2: Convert to fraction form
    12,159.04/18,225 = 5,136.94/x
  3. Step 3: Cross multiply
    12,159.04x = 18,225 × 5,136.94
  4. Step 4: Simplify right side
    12,159.04x = 93,620,731.50
  5. Step 5: Solve for x
    x = 93,620,731.50/12,159.04
  6. Step 6: Final answer
    x = 7,699.68

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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.