Home / 19,386.40-26,753.48-11,428.15

Finding the Fourth Proportional to 19,386.40, 26,753.48 and 11,428.15

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Solution

The fourth proportional to 19,386.40, 26,753.48 and 11,428.15 is: 15,770.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,386.40 : 26,753.48 = 11,428.15 : x
  2. Step 2: Convert to fraction form
    19,386.40/26,753.48 = 11,428.15/x
  3. Step 3: Cross multiply
    19,386.40x = 26,753.48 × 11,428.15
  4. Step 4: Simplify right side
    19,386.40x = 305,742,725.32
  5. Step 5: Solve for x
    x = 305,742,725.32/19,386.40
  6. Step 6: Final answer
    x = 15,770.99

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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.