Home / 13,980.07-19,300.71-8,677.81

Finding the Fourth Proportional to 13,980.07, 19,300.71 and 8,677.81

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Solution

The fourth proportional to 13,980.07, 19,300.71 and 8,677.81 is: 11,980.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.07 : 19,300.71 = 8,677.81 : x
  2. Step 2: Convert to fraction form
    13,980.07/19,300.71 = 8,677.81/x
  3. Step 3: Cross multiply
    13,980.07x = 19,300.71 × 8,677.81
  4. Step 4: Simplify right side
    13,980.07x = 167,487,894.25
  5. Step 5: Solve for x
    x = 167,487,894.25/13,980.07
  6. Step 6: Final answer
    x = 11,980.48

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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.