Home / 31,666.14-43,688.16-19,719.59

Finding the Fourth Proportional to 31,666.14, 43,688.16 and 19,719.59

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Solution

The fourth proportional to 31,666.14, 43,688.16 and 19,719.59 is: 27,206.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,666.14 : 43,688.16 = 19,719.59 : x
  2. Step 2: Convert to fraction form
    31,666.14/43,688.16 = 19,719.59/x
  3. Step 3: Cross multiply
    31,666.14x = 43,688.16 × 19,719.59
  4. Step 4: Simplify right side
    31,666.14x = 861,512,384.61
  5. Step 5: Solve for x
    x = 861,512,384.61/31,666.14
  6. Step 6: Final answer
    x = 27,206.11

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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.