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Finding the Fourth Proportional to 14,315.88, 19,888.19 and 14,187.72

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Solution

The fourth proportional to 14,315.88, 19,888.19 and 14,187.72 is: 19,710.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,315.88 : 19,888.19 = 14,187.72 : x
  2. Step 2: Convert to fraction form
    14,315.88/19,888.19 = 14,187.72/x
  3. Step 3: Cross multiply
    14,315.88x = 19,888.19 × 14,187.72
  4. Step 4: Simplify right side
    14,315.88x = 282,168,071.03
  5. Step 5: Solve for x
    x = 282,168,071.03/14,315.88
  6. Step 6: Final answer
    x = 19,710.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.