Home / 14,013.60-21,020.40-7,792.80

Finding the Fourth Proportional to 14,013.60, 21,020.40 and 7,792.80

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Solution

The fourth proportional to 14,013.60, 21,020.40 and 7,792.80 is: 11,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,013.60 : 21,020.40 = 7,792.80 : x
  2. Step 2: Convert to fraction form
    14,013.60/21,020.40 = 7,792.80/x
  3. Step 3: Cross multiply
    14,013.60x = 21,020.40 × 7,792.80
  4. Step 4: Simplify right side
    14,013.60x = 163,807,773.12
  5. Step 5: Solve for x
    x = 163,807,773.12/14,013.60
  6. Step 6: Final answer
    x = 11,689.20

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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.