Home / 13,029.51-19,570.40-7,774.78

Finding the Fourth Proportional to 13,029.51, 19,570.40 and 7,774.78

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Solution

The fourth proportional to 13,029.51, 19,570.40 and 7,774.78 is: 11,677.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,029.51 : 19,570.40 = 7,774.78 : x
  2. Step 2: Convert to fraction form
    13,029.51/19,570.40 = 7,774.78/x
  3. Step 3: Cross multiply
    13,029.51x = 19,570.40 × 7,774.78
  4. Step 4: Simplify right side
    13,029.51x = 152,155,554.51
  5. Step 5: Solve for x
    x = 152,155,554.51/13,029.51
  6. Step 6: Final answer
    x = 11,677.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.