Home / 24,390.40-36,628.80-18,857.20

Finding the Fourth Proportional to 24,390.40, 36,628.80 and 18,857.20

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Solution

The fourth proportional to 24,390.40, 36,628.80 and 18,857.20 is: 28,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,390.40 : 36,628.80 = 18,857.20 : x
  2. Step 2: Convert to fraction form
    24,390.40/36,628.80 = 18,857.20/x
  3. Step 3: Cross multiply
    24,390.40x = 36,628.80 × 18,857.20
  4. Step 4: Simplify right side
    24,390.40x = 690,716,607.36
  5. Step 5: Solve for x
    x = 690,716,607.36/24,390.40
  6. Step 6: Final answer
    x = 28,319.20

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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.