Home / 28,681.05-39,612.96-19,105.16

Finding the Fourth Proportional to 28,681.05, 39,612.96 and 19,105.16

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Solution

The fourth proportional to 28,681.05, 39,612.96 and 19,105.16 is: 26,387.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,681.05 : 39,612.96 = 19,105.16 : x
  2. Step 2: Convert to fraction form
    28,681.05/39,612.96 = 19,105.16/x
  3. Step 3: Cross multiply
    28,681.05x = 39,612.96 × 19,105.16
  4. Step 4: Simplify right side
    28,681.05x = 756,811,740.81
  5. Step 5: Solve for x
    x = 756,811,740.81/28,681.05
  6. Step 6: Final answer
    x = 26,387.17

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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.