Home / 12,739.07-19,075.70-8,802.47

Finding the Fourth Proportional to 12,739.07, 19,075.70 and 8,802.47

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Solution

The fourth proportional to 12,739.07, 19,075.70 and 8,802.47 is: 13,180.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.07 : 19,075.70 = 8,802.47 : x
  2. Step 2: Convert to fraction form
    12,739.07/19,075.70 = 8,802.47/x
  3. Step 3: Cross multiply
    12,739.07x = 19,075.70 × 8,802.47
  4. Step 4: Simplify right side
    12,739.07x = 167,913,346.67
  5. Step 5: Solve for x
    x = 167,913,346.67/12,739.07
  6. Step 6: Final answer
    x = 13,180.97

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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.