Home / 20,690.16-31,030.20-5,900.40

Finding the Fourth Proportional to 20,690.16, 31,030.20 and 5,900.40

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Solution

The fourth proportional to 20,690.16, 31,030.20 and 5,900.40 is: 8,849.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.16 : 31,030.20 = 5,900.40 : x
  2. Step 2: Convert to fraction form
    20,690.16/31,030.20 = 5,900.40/x
  3. Step 3: Cross multiply
    20,690.16x = 31,030.20 × 5,900.40
  4. Step 4: Simplify right side
    20,690.16x = 183,090,592.08
  5. Step 5: Solve for x
    x = 183,090,592.08/20,690.16
  6. Step 6: Final answer
    x = 8,849.16

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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.