Home / 19,478.70-26,877.08-11,520.45

Finding the Fourth Proportional to 19,478.70, 26,877.08 and 11,520.45

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Solution

The fourth proportional to 19,478.70, 26,877.08 and 11,520.45 is: 15,896.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,478.70 : 26,877.08 = 11,520.45 : x
  2. Step 2: Convert to fraction form
    19,478.70/26,877.08 = 11,520.45/x
  3. Step 3: Cross multiply
    19,478.70x = 26,877.08 × 11,520.45
  4. Step 4: Simplify right side
    19,478.70x = 309,636,085.09
  5. Step 5: Solve for x
    x = 309,636,085.09/19,478.70
  6. Step 6: Final answer
    x = 15,896.14

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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.