Home / 28,154.81-38,808.96-22,177.01

Finding the Fourth Proportional to 28,154.81, 38,808.96 and 22,177.01

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Solution

The fourth proportional to 28,154.81, 38,808.96 and 22,177.01 is: 30,569.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,154.81 : 38,808.96 = 22,177.01 : x
  2. Step 2: Convert to fraction form
    28,154.81/38,808.96 = 22,177.01/x
  3. Step 3: Cross multiply
    28,154.81x = 38,808.96 × 22,177.01
  4. Step 4: Simplify right side
    28,154.81x = 860,666,694.01
  5. Step 5: Solve for x
    x = 860,666,694.01/28,154.81
  6. Step 6: Final answer
    x = 30,569.08

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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.