Home / 18,720.79-28,088.83-12,060.77

Finding the Fourth Proportional to 18,720.79, 28,088.83 and 12,060.77

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Solution

The fourth proportional to 18,720.79, 28,088.83 and 12,060.77 is: 18,096.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.79 : 28,088.83 = 12,060.77 : x
  2. Step 2: Convert to fraction form
    18,720.79/28,088.83 = 12,060.77/x
  3. Step 3: Cross multiply
    18,720.79x = 28,088.83 × 12,060.77
  4. Step 4: Simplify right side
    18,720.79x = 338,772,782.71
  5. Step 5: Solve for x
    x = 338,772,782.71/18,720.79
  6. Step 6: Final answer
    x = 18,096.07

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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.