Home / 13,071.72-18,038.64-7,103.16

Finding the Fourth Proportional to 13,071.72, 18,038.64 and 7,103.16

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Solution

The fourth proportional to 13,071.72, 18,038.64 and 7,103.16 is: 9,802.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,071.72 : 18,038.64 = 7,103.16 : x
  2. Step 2: Convert to fraction form
    13,071.72/18,038.64 = 7,103.16/x
  3. Step 3: Cross multiply
    13,071.72x = 18,038.64 × 7,103.16
  4. Step 4: Simplify right side
    13,071.72x = 128,131,346.10
  5. Step 5: Solve for x
    x = 128,131,346.10/13,071.72
  6. Step 6: Final answer
    x = 9,802.18

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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.