Home / 23,118.40-31,907.28-13,692.16

Finding the Fourth Proportional to 23,118.40, 31,907.28 and 13,692.16

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Solution

The fourth proportional to 23,118.40, 31,907.28 and 13,692.16 is: 18,897.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,118.40 : 31,907.28 = 13,692.16 : x
  2. Step 2: Convert to fraction form
    23,118.40/31,907.28 = 13,692.16/x
  3. Step 3: Cross multiply
    23,118.40x = 31,907.28 × 13,692.16
  4. Step 4: Simplify right side
    23,118.40x = 436,879,582.92
  5. Step 5: Solve for x
    x = 436,879,582.92/23,118.40
  6. Step 6: Final answer
    x = 18,897.48

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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.