Home / 20,259.60-30,389.40-7,113.30

Finding the Fourth Proportional to 20,259.60, 30,389.40 and 7,113.30

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Solution

The fourth proportional to 20,259.60, 30,389.40 and 7,113.30 is: 10,669.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.60 : 30,389.40 = 7,113.30 : x
  2. Step 2: Convert to fraction form
    20,259.60/30,389.40 = 7,113.30/x
  3. Step 3: Cross multiply
    20,259.60x = 30,389.40 × 7,113.30
  4. Step 4: Simplify right side
    20,259.60x = 216,168,919.02
  5. Step 5: Solve for x
    x = 216,168,919.02/20,259.60
  6. Step 6: Final answer
    x = 10,669.95

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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.