Home / 13,771.79-19,005.20-7,484.16

Finding the Fourth Proportional to 13,771.79, 19,005.20 and 7,484.16

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Solution

The fourth proportional to 13,771.79, 19,005.20 and 7,484.16 is: 10,328.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.79 : 19,005.20 = 7,484.16 : x
  2. Step 2: Convert to fraction form
    13,771.79/19,005.20 = 7,484.16/x
  3. Step 3: Cross multiply
    13,771.79x = 19,005.20 × 7,484.16
  4. Step 4: Simplify right side
    13,771.79x = 142,238,019.55
  5. Step 5: Solve for x
    x = 142,238,019.55/13,771.79
  6. Step 6: Final answer
    x = 10,328.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.