Home / 12,303.36-18,439.44-7,859.31

Finding the Fourth Proportional to 12,303.36, 18,439.44 and 7,859.31

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Solution

The fourth proportional to 12,303.36, 18,439.44 and 7,859.31 is: 11,779.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303.36 : 18,439.44 = 7,859.31 : x
  2. Step 2: Convert to fraction form
    12,303.36/18,439.44 = 7,859.31/x
  3. Step 3: Cross multiply
    12,303.36x = 18,439.44 × 7,859.31
  4. Step 4: Simplify right side
    12,303.36x = 144,921,275.19
  5. Step 5: Solve for x
    x = 144,921,275.19/12,303.36
  6. Step 6: Final answer
    x = 11,779.00

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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.