Home / 19,970.79-27,676.19-19,688.91

Finding the Fourth Proportional to 19,970.79, 27,676.19 and 19,688.91

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Solution

The fourth proportional to 19,970.79, 27,676.19 and 19,688.91 is: 27,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,970.79 : 27,676.19 = 19,688.91 : x
  2. Step 2: Convert to fraction form
    19,970.79/27,676.19 = 19,688.91/x
  3. Step 3: Cross multiply
    19,970.79x = 27,676.19 × 19,688.91
  4. Step 4: Simplify right side
    19,970.79x = 544,913,904.11
  5. Step 5: Solve for x
    x = 544,913,904.11/19,970.79
  6. Step 6: Final answer
    x = 27,285.55

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.