Home / 13,071.18-18,038.56-7,103.18

Finding the Fourth Proportional to 13,071.18, 18,038.56 and 7,103.18

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Solution

The fourth proportional to 13,071.18, 18,038.56 and 7,103.18 is: 9,802.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,071.18 : 18,038.56 = 7,103.18 : x
  2. Step 2: Convert to fraction form
    13,071.18/18,038.56 = 7,103.18/x
  3. Step 3: Cross multiply
    13,071.18x = 18,038.56 × 7,103.18
  4. Step 4: Simplify right side
    13,071.18x = 128,131,138.62
  5. Step 5: Solve for x
    x = 128,131,138.62/13,071.18
  6. Step 6: Final answer
    x = 9,802.57

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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.