Home / 28,698.21-42,975.72-18,136.36

Finding the Fourth Proportional to 28,698.21, 42,975.72 and 18,136.36

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Solution

The fourth proportional to 28,698.21, 42,975.72 and 18,136.36 is: 27,159.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,698.21 : 42,975.72 = 18,136.36 : x
  2. Step 2: Convert to fraction form
    28,698.21/42,975.72 = 18,136.36/x
  3. Step 3: Cross multiply
    28,698.21x = 42,975.72 × 18,136.36
  4. Step 4: Simplify right side
    28,698.21x = 779,423,129.18
  5. Step 5: Solve for x
    x = 779,423,129.18/28,698.21
  6. Step 6: Final answer
    x = 27,159.29

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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.