Home / 28,153.81-38,807.59-22,176.01

Finding the Fourth Proportional to 28,153.81, 38,807.59 and 22,176.01

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Solution

The fourth proportional to 28,153.81, 38,807.59 and 22,176.01 is: 30,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,153.81 : 38,807.59 = 22,176.01 : x
  2. Step 2: Convert to fraction form
    28,153.81/38,807.59 = 22,176.01/x
  3. Step 3: Cross multiply
    28,153.81x = 38,807.59 × 22,176.01
  4. Step 4: Simplify right side
    28,153.81x = 860,597,199.00
  5. Step 5: Solve for x
    x = 860,597,199.00/28,153.81
  6. Step 6: Final answer
    x = 30,567.70

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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.