Home / 12,740.13-19,112.93-5,340.34

Finding the Fourth Proportional to 12,740.13, 19,112.93 and 5,340.34

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Solution

The fourth proportional to 12,740.13, 19,112.93 and 5,340.34 is: 8,011.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.13 : 19,112.93 = 5,340.34 : x
  2. Step 2: Convert to fraction form
    12,740.13/19,112.93 = 5,340.34/x
  3. Step 3: Cross multiply
    12,740.13x = 19,112.93 × 5,340.34
  4. Step 4: Simplify right side
    12,740.13x = 102,069,561.81
  5. Step 5: Solve for x
    x = 102,069,561.81/12,740.13
  6. Step 6: Final answer
    x = 8,011.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.