Home / 19,430.49-26,816.15-11,881.25

Finding the Fourth Proportional to 19,430.49, 26,816.15 and 11,881.25

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Solution

The fourth proportional to 19,430.49, 26,816.15 and 11,881.25 is: 16,397.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,430.49 : 26,816.15 = 11,881.25 : x
  2. Step 2: Convert to fraction form
    19,430.49/26,816.15 = 11,881.25/x
  3. Step 3: Cross multiply
    19,430.49x = 26,816.15 × 11,881.25
  4. Step 4: Simplify right side
    19,430.49x = 318,609,277.81
  5. Step 5: Solve for x
    x = 318,609,277.81/19,430.49
  6. Step 6: Final answer
    x = 16,397.39

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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.