Home / 13,995.31-19,312.64-7,707.68

Finding the Fourth Proportional to 13,995.31, 19,312.64 and 7,707.68

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Solution

The fourth proportional to 13,995.31, 19,312.64 and 7,707.68 is: 10,636.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.31 : 19,312.64 = 7,707.68 : x
  2. Step 2: Convert to fraction form
    13,995.31/19,312.64 = 7,707.68/x
  3. Step 3: Cross multiply
    13,995.31x = 19,312.64 × 7,707.68
  4. Step 4: Simplify right side
    13,995.31x = 148,855,658.82
  5. Step 5: Solve for x
    x = 148,855,658.82/13,995.31
  6. Step 6: Final answer
    x = 10,636.11

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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.