Home / 12,430.80-18,714.24-11,342.16

Finding the Fourth Proportional to 12,430.80, 18,714.24 and 11,342.16

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Solution

The fourth proportional to 12,430.80, 18,714.24 and 11,342.16 is: 17,075.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.80 : 18,714.24 = 11,342.16 : x
  2. Step 2: Convert to fraction form
    12,430.80/18,714.24 = 11,342.16/x
  3. Step 3: Cross multiply
    12,430.80x = 18,714.24 × 11,342.16
  4. Step 4: Simplify right side
    12,430.80x = 212,259,904.36
  5. Step 5: Solve for x
    x = 212,259,904.36/12,430.80
  6. Step 6: Final answer
    x = 17,075.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.