Home / 19,780.29-29,670.44-8,088.75

Finding the Fourth Proportional to 19,780.29, 29,670.44 and 8,088.75

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Solution

The fourth proportional to 19,780.29, 29,670.44 and 8,088.75 is: 12,133.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.29 : 29,670.44 = 8,088.75 : x
  2. Step 2: Convert to fraction form
    19,780.29/29,670.44 = 8,088.75/x
  3. Step 3: Cross multiply
    19,780.29x = 29,670.44 × 8,088.75
  4. Step 4: Simplify right side
    19,780.29x = 239,996,731.11
  5. Step 5: Solve for x
    x = 239,996,731.11/19,780.29
  6. Step 6: Final answer
    x = 12,133.13

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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.