Home / 19,875.69-27,428.40-10,923.75

Finding the Fourth Proportional to 19,875.69, 27,428.40 and 10,923.75

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Solution

The fourth proportional to 19,875.69, 27,428.40 and 10,923.75 is: 15,074.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,875.69 : 27,428.40 = 10,923.75 : x
  2. Step 2: Convert to fraction form
    19,875.69/27,428.40 = 10,923.75/x
  3. Step 3: Cross multiply
    19,875.69x = 27,428.40 × 10,923.75
  4. Step 4: Simplify right side
    19,875.69x = 299,620,984.50
  5. Step 5: Solve for x
    x = 299,620,984.50/19,875.69
  6. Step 6: Final answer
    x = 15,074.75

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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.