Home / 15,840.87-21,865.27-9,130.98

Finding the Fourth Proportional to 15,840.87, 21,865.27 and 9,130.98

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Solution

The fourth proportional to 15,840.87, 21,865.27 and 9,130.98 is: 12,603.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.87 : 21,865.27 = 9,130.98 : x
  2. Step 2: Convert to fraction form
    15,840.87/21,865.27 = 9,130.98/x
  3. Step 3: Cross multiply
    15,840.87x = 21,865.27 × 9,130.98
  4. Step 4: Simplify right side
    15,840.87x = 199,651,436.47
  5. Step 5: Solve for x
    x = 199,651,436.47/15,840.87
  6. Step 6: Final answer
    x = 12,603.57

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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.