Home / 28,328.72-42,507.36-20,061.86

Finding the Fourth Proportional to 28,328.72, 42,507.36 and 20,061.86

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Solution

The fourth proportional to 28,328.72, 42,507.36 and 20,061.86 is: 30,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.72 : 42,507.36 = 20,061.86 : x
  2. Step 2: Convert to fraction form
    28,328.72/42,507.36 = 20,061.86/x
  3. Step 3: Cross multiply
    28,328.72x = 42,507.36 × 20,061.86
  4. Step 4: Simplify right side
    28,328.72x = 852,776,705.29
  5. Step 5: Solve for x
    x = 852,776,705.29/28,328.72
  6. Step 6: Final answer
    x = 30,102.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.