Home / 28,661.18-42,986.90-13,075.16

Finding the Fourth Proportional to 28,661.18, 42,986.90 and 13,075.16

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Solution

The fourth proportional to 28,661.18, 42,986.90 and 13,075.16 is: 19,610.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,661.18 : 42,986.90 = 13,075.16 : x
  2. Step 2: Convert to fraction form
    28,661.18/42,986.90 = 13,075.16/x
  3. Step 3: Cross multiply
    28,661.18x = 42,986.90 × 13,075.16
  4. Step 4: Simplify right side
    28,661.18x = 562,060,595.40
  5. Step 5: Solve for x
    x = 562,060,595.40/28,661.18
  6. Step 6: Final answer
    x = 19,610.52

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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.