Home / 12,782.03-19,248.40-11,157.71

Finding the Fourth Proportional to 12,782.03, 19,248.40 and 11,157.71

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Solution

The fourth proportional to 12,782.03, 19,248.40 and 11,157.71 is: 16,802.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782.03 : 19,248.40 = 11,157.71 : x
  2. Step 2: Convert to fraction form
    12,782.03/19,248.40 = 11,157.71/x
  3. Step 3: Cross multiply
    12,782.03x = 19,248.40 × 11,157.71
  4. Step 4: Simplify right side
    12,782.03x = 214,768,065.16
  5. Step 5: Solve for x
    x = 214,768,065.16/12,782.03
  6. Step 6: Final answer
    x = 16,802.34

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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.