Home / 19,665.81-27,158.04-16,816.68

Finding the Fourth Proportional to 19,665.81, 27,158.04 and 16,816.68

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Solution

The fourth proportional to 19,665.81, 27,158.04 and 16,816.68 is: 23,223.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,665.81 : 27,158.04 = 16,816.68 : x
  2. Step 2: Convert to fraction form
    19,665.81/27,158.04 = 16,816.68/x
  3. Step 3: Cross multiply
    19,665.81x = 27,158.04 × 16,816.68
  4. Step 4: Simplify right side
    19,665.81x = 456,708,068.11
  5. Step 5: Solve for x
    x = 456,708,068.11/19,665.81
  6. Step 6: Final answer
    x = 23,223.46

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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.