Home / 28,313.90-39,069.79-15,564.98

Finding the Fourth Proportional to 28,313.90, 39,069.79 and 15,564.98

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Solution

The fourth proportional to 28,313.90, 39,069.79 and 15,564.98 is: 21,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,313.90 : 39,069.79 = 15,564.98 : x
  2. Step 2: Convert to fraction form
    28,313.90/39,069.79 = 15,564.98/x
  3. Step 3: Cross multiply
    28,313.90x = 39,069.79 × 15,564.98
  4. Step 4: Simplify right side
    28,313.90x = 608,120,422.13
  5. Step 5: Solve for x
    x = 608,120,422.13/28,313.90
  6. Step 6: Final answer
    x = 21,477.80

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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.