Home / 18,411.84-25,434.18-16,421.76

Finding the Fourth Proportional to 18,411.84, 25,434.18 and 16,421.76

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Solution

The fourth proportional to 18,411.84, 25,434.18 and 16,421.76 is: 22,685.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.84 : 25,434.18 = 16,421.76 : x
  2. Step 2: Convert to fraction form
    18,411.84/25,434.18 = 16,421.76/x
  3. Step 3: Cross multiply
    18,411.84x = 25,434.18 × 16,421.76
  4. Step 4: Simplify right side
    18,411.84x = 417,673,999.76
  5. Step 5: Solve for x
    x = 417,673,999.76/18,411.84
  6. Step 6: Final answer
    x = 22,685.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.