Home / 14,009.36-19,323.72-8,420.36

Finding the Fourth Proportional to 14,009.36, 19,323.72 and 8,420.36

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Solution

The fourth proportional to 14,009.36, 19,323.72 and 8,420.36 is: 11,614.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.36 : 19,323.72 = 8,420.36 : x
  2. Step 2: Convert to fraction form
    14,009.36/19,323.72 = 8,420.36/x
  3. Step 3: Cross multiply
    14,009.36x = 19,323.72 × 8,420.36
  4. Step 4: Simplify right side
    14,009.36x = 162,712,678.94
  5. Step 5: Solve for x
    x = 162,712,678.94/14,009.36
  6. Step 6: Final answer
    x = 11,614.57

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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.