Home / 14,158.28-21,113.80-12,411.38

Finding the Fourth Proportional to 14,158.28, 21,113.80 and 12,411.38

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Solution

The fourth proportional to 14,158.28, 21,113.80 and 12,411.38 is: 18,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,158.28 : 21,113.80 = 12,411.38 : x
  2. Step 2: Convert to fraction form
    14,158.28/21,113.80 = 12,411.38/x
  3. Step 3: Cross multiply
    14,158.28x = 21,113.80 × 12,411.38
  4. Step 4: Simplify right side
    14,158.28x = 262,051,395.04
  5. Step 5: Solve for x
    x = 262,051,395.04/14,158.28
  6. Step 6: Final answer
    x = 18,508.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.