Home / 20,938.01-31,411.40-6,145.74

Finding the Fourth Proportional to 20,938.01, 31,411.40 and 6,145.74

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Solution

The fourth proportional to 20,938.01, 31,411.40 and 6,145.74 is: 9,219.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.01 : 31,411.40 = 6,145.74 : x
  2. Step 2: Convert to fraction form
    20,938.01/31,411.40 = 6,145.74/x
  3. Step 3: Cross multiply
    20,938.01x = 31,411.40 × 6,145.74
  4. Step 4: Simplify right side
    20,938.01x = 193,046,266.71
  5. Step 5: Solve for x
    x = 193,046,266.71/20,938.01
  6. Step 6: Final answer
    x = 9,219.90

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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.