Home / 12,703.36-17,530.64-7,114.40

Finding the Fourth Proportional to 12,703.36, 17,530.64 and 7,114.40

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Solution

The fourth proportional to 12,703.36, 17,530.64 and 7,114.40 is: 9,817.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,703.36 : 17,530.64 = 7,114.40 : x
  2. Step 2: Convert to fraction form
    12,703.36/17,530.64 = 7,114.40/x
  3. Step 3: Cross multiply
    12,703.36x = 17,530.64 × 7,114.40
  4. Step 4: Simplify right side
    12,703.36x = 124,719,985.22
  5. Step 5: Solve for x
    x = 124,719,985.22/12,703.36
  6. Step 6: Final answer
    x = 9,817.87

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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.