Home / 28,570.20-39,389.40-19,602.15

Finding the Fourth Proportional to 28,570.20, 39,389.40 and 19,602.15

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Solution

The fourth proportional to 28,570.20, 39,389.40 and 19,602.15 is: 27,025.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.20 : 39,389.40 = 19,602.15 : x
  2. Step 2: Convert to fraction form
    28,570.20/39,389.40 = 19,602.15/x
  3. Step 3: Cross multiply
    28,570.20x = 39,389.40 × 19,602.15
  4. Step 4: Simplify right side
    28,570.20x = 772,116,927.21
  5. Step 5: Solve for x
    x = 772,116,927.21/28,570.20
  6. Step 6: Final answer
    x = 27,025.25

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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.