Home / 20,018.79-30,031.67-8,925.23

Finding the Fourth Proportional to 20,018.79, 30,031.67 and 8,925.23

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Solution

The fourth proportional to 20,018.79, 30,031.67 and 8,925.23 is: 13,389.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.79 : 30,031.67 = 8,925.23 : x
  2. Step 2: Convert to fraction form
    20,018.79/30,031.67 = 8,925.23/x
  3. Step 3: Cross multiply
    20,018.79x = 30,031.67 × 8,925.23
  4. Step 4: Simplify right side
    20,018.79x = 268,039,659.43
  5. Step 5: Solve for x
    x = 268,039,659.43/20,018.79
  6. Step 6: Final answer
    x = 13,389.40

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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.