Home / 15,325.12-21,099.77-13,077.98

Finding the Fourth Proportional to 15,325.12, 21,099.77 and 13,077.98

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Solution

The fourth proportional to 15,325.12, 21,099.77 and 13,077.98 is: 18,005.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,325.12 : 21,099.77 = 13,077.98 : x
  2. Step 2: Convert to fraction form
    15,325.12/21,099.77 = 13,077.98/x
  3. Step 3: Cross multiply
    15,325.12x = 21,099.77 × 13,077.98
  4. Step 4: Simplify right side
    15,325.12x = 275,942,264.57
  5. Step 5: Solve for x
    x = 275,942,264.57/15,325.12
  6. Step 6: Final answer
    x = 18,005.89

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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.