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Finding the Fourth Proportional to 30,505.04, 45,683.04 and 18,802.16

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Solution

The fourth proportional to 30,505.04, 45,683.04 and 18,802.16 is: 28,157.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,505.04 : 45,683.04 = 18,802.16 : x
  2. Step 2: Convert to fraction form
    30,505.04/45,683.04 = 18,802.16/x
  3. Step 3: Cross multiply
    30,505.04x = 45,683.04 × 18,802.16
  4. Step 4: Simplify right side
    30,505.04x = 858,939,827.37
  5. Step 5: Solve for x
    x = 858,939,827.37/30,505.04
  6. Step 6: Final answer
    x = 28,157.31

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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.