Home / 18,913.04-28,369.53-5,586.21

Finding the Fourth Proportional to 18,913.04, 28,369.53 and 5,586.21

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Solution

The fourth proportional to 18,913.04, 28,369.53 and 5,586.21 is: 8,379.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.04 : 28,369.53 = 5,586.21 : x
  2. Step 2: Convert to fraction form
    18,913.04/28,369.53 = 5,586.21/x
  3. Step 3: Cross multiply
    18,913.04x = 28,369.53 × 5,586.21
  4. Step 4: Simplify right side
    18,913.04x = 158,478,152.18
  5. Step 5: Solve for x
    x = 158,478,152.18/18,913.04
  6. Step 6: Final answer
    x = 8,379.31

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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.