Home / 19,981.08-27,562.02-12,911.68

Finding the Fourth Proportional to 19,981.08, 27,562.02 and 12,911.68

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Solution

The fourth proportional to 19,981.08, 27,562.02 and 12,911.68 is: 17,810.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.08 : 27,562.02 = 12,911.68 : x
  2. Step 2: Convert to fraction form
    19,981.08/27,562.02 = 12,911.68/x
  3. Step 3: Cross multiply
    19,981.08x = 27,562.02 × 12,911.68
  4. Step 4: Simplify right side
    19,981.08x = 355,871,982.39
  5. Step 5: Solve for x
    x = 355,871,982.39/19,981.08
  6. Step 6: Final answer
    x = 17,810.45

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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.