Home / 20,205.60-30,301.20-7,058.40

Finding the Fourth Proportional to 20,205.60, 30,301.20 and 7,058.40

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Solution

The fourth proportional to 20,205.60, 30,301.20 and 7,058.40 is: 10,585.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.60 : 30,301.20 = 7,058.40 : x
  2. Step 2: Convert to fraction form
    20,205.60/30,301.20 = 7,058.40/x
  3. Step 3: Cross multiply
    20,205.60x = 30,301.20 × 7,058.40
  4. Step 4: Simplify right side
    20,205.60x = 213,877,990.08
  5. Step 5: Solve for x
    x = 213,877,990.08/20,205.60
  6. Step 6: Final answer
    x = 10,585.08

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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.