Home / 13,995.40-19,312.76-7,707.77

Finding the Fourth Proportional to 13,995.40, 19,312.76 and 7,707.77

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Solution

The fourth proportional to 13,995.40, 19,312.76 and 7,707.77 is: 10,636.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.40 : 19,312.76 = 7,707.77 : x
  2. Step 2: Convert to fraction form
    13,995.40/19,312.76 = 7,707.77/x
  3. Step 3: Cross multiply
    13,995.40x = 19,312.76 × 7,707.77
  4. Step 4: Simplify right side
    13,995.40x = 148,858,379.70
  5. Step 5: Solve for x
    x = 148,858,379.70/13,995.40
  6. Step 6: Final answer
    x = 10,636.24

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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.