Home / 19,880.10-27,423.08-12,415.14

Finding the Fourth Proportional to 19,880.10, 27,423.08 and 12,415.14

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Solution

The fourth proportional to 19,880.10, 27,423.08 and 12,415.14 is: 17,125.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.10 : 27,423.08 = 12,415.14 : x
  2. Step 2: Convert to fraction form
    19,880.10/27,423.08 = 12,415.14/x
  3. Step 3: Cross multiply
    19,880.10x = 27,423.08 × 12,415.14
  4. Step 4: Simplify right side
    19,880.10x = 340,461,377.43
  5. Step 5: Solve for x
    x = 340,461,377.43/19,880.10
  6. Step 6: Final answer
    x = 17,125.74

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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.