Home / 19,390.75-26,755.08-11,430.07

Finding the Fourth Proportional to 19,390.75, 26,755.08 and 11,430.07

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Solution

The fourth proportional to 19,390.75, 26,755.08 and 11,430.07 is: 15,771.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.75 : 26,755.08 = 11,430.07 : x
  2. Step 2: Convert to fraction form
    19,390.75/26,755.08 = 11,430.07/x
  3. Step 3: Cross multiply
    19,390.75x = 26,755.08 × 11,430.07
  4. Step 4: Simplify right side
    19,390.75x = 305,812,437.26
  5. Step 5: Solve for x
    x = 305,812,437.26/19,390.75
  6. Step 6: Final answer
    x = 15,771.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.