Home / 21,518.04-29,700.54-12,089.64

Finding the Fourth Proportional to 21,518.04, 29,700.54 and 12,089.64

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Solution

The fourth proportional to 21,518.04, 29,700.54 and 12,089.64 is: 16,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.04 : 29,700.54 = 12,089.64 : x
  2. Step 2: Convert to fraction form
    21,518.04/29,700.54 = 12,089.64/x
  3. Step 3: Cross multiply
    21,518.04x = 29,700.54 × 12,089.64
  4. Step 4: Simplify right side
    21,518.04x = 359,068,836.41
  5. Step 5: Solve for x
    x = 359,068,836.41/21,518.04
  6. Step 6: Final answer
    x = 16,686.87

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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.