Home / 20,690.04-31,050.45-10,165.71

Finding the Fourth Proportional to 20,690.04, 31,050.45 and 10,165.71

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Solution

The fourth proportional to 20,690.04, 31,050.45 and 10,165.71 is: 15,256.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.04 : 31,050.45 = 10,165.71 : x
  2. Step 2: Convert to fraction form
    20,690.04/31,050.45 = 10,165.71/x
  3. Step 3: Cross multiply
    20,690.04x = 31,050.45 × 10,165.71
  4. Step 4: Simplify right side
    20,690.04x = 315,649,870.07
  5. Step 5: Solve for x
    x = 315,649,870.07/20,690.04
  6. Step 6: Final answer
    x = 15,256.13

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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.