Home / 20,186.16-30,312.18-12,444.18

Finding the Fourth Proportional to 20,186.16, 30,312.18 and 12,444.18

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Solution

The fourth proportional to 20,186.16, 30,312.18 and 12,444.18 is: 18,686.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.16 : 30,312.18 = 12,444.18 : x
  2. Step 2: Convert to fraction form
    20,186.16/30,312.18 = 12,444.18/x
  3. Step 3: Cross multiply
    20,186.16x = 30,312.18 × 12,444.18
  4. Step 4: Simplify right side
    20,186.16x = 377,210,224.11
  5. Step 5: Solve for x
    x = 377,210,224.11/20,186.16
  6. Step 6: Final answer
    x = 18,686.58

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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.