Home / 14,277.60-21,416.40-12,868.20

Finding the Fourth Proportional to 14,277.60, 21,416.40 and 12,868.20

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Solution

The fourth proportional to 14,277.60, 21,416.40 and 12,868.20 is: 19,302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,277.60 : 21,416.40 = 12,868.20 : x
  2. Step 2: Convert to fraction form
    14,277.60/21,416.40 = 12,868.20/x
  3. Step 3: Cross multiply
    14,277.60x = 21,416.40 × 12,868.20
  4. Step 4: Simplify right side
    14,277.60x = 275,590,518.48
  5. Step 5: Solve for x
    x = 275,590,518.48/14,277.60
  6. Step 6: Final answer
    x = 19,302.30

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1.5x scale

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.