Home / 13,985.16-19,299.42-7,697.40

Finding the Fourth Proportional to 13,985.16, 19,299.42 and 7,697.40

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Solution

The fourth proportional to 13,985.16, 19,299.42 and 7,697.40 is: 10,622.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.16 : 19,299.42 = 7,697.40 : x
  2. Step 2: Convert to fraction form
    13,985.16/19,299.42 = 7,697.40/x
  3. Step 3: Cross multiply
    13,985.16x = 19,299.42 × 7,697.40
  4. Step 4: Simplify right side
    13,985.16x = 148,555,355.51
  5. Step 5: Solve for x
    x = 148,555,355.51/13,985.16
  6. Step 6: Final answer
    x = 10,622.36

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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.