Home / 19,870.84-27,423.30-11,913.40

Finding the Fourth Proportional to 19,870.84, 27,423.30 and 11,913.40

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Solution

The fourth proportional to 19,870.84, 27,423.30 and 11,913.40 is: 16,441.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.84 : 27,423.30 = 11,913.40 : x
  2. Step 2: Convert to fraction form
    19,870.84/27,423.30 = 11,913.40/x
  3. Step 3: Cross multiply
    19,870.84x = 27,423.30 × 11,913.40
  4. Step 4: Simplify right side
    19,870.84x = 326,704,742.22
  5. Step 5: Solve for x
    x = 326,704,742.22/19,870.84
  6. Step 6: Final answer
    x = 16,441.42

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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.