Home / 14,490.20-21,686.70-12,740.60

Finding the Fourth Proportional to 14,490.20, 21,686.70 and 12,740.60

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Solution

The fourth proportional to 14,490.20, 21,686.70 and 12,740.60 is: 19,068.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.20 : 21,686.70 = 12,740.60 : x
  2. Step 2: Convert to fraction form
    14,490.20/21,686.70 = 12,740.60/x
  3. Step 3: Cross multiply
    14,490.20x = 21,686.70 × 12,740.60
  4. Step 4: Simplify right side
    14,490.20x = 276,301,570.02
  5. Step 5: Solve for x
    x = 276,301,570.02/14,490.20
  6. Step 6: Final answer
    x = 19,068.17

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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.