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Finding the Fourth Proportional to 14,153.52, 19,531.64 and 7,779.98

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Solution

The fourth proportional to 14,153.52, 19,531.64 and 7,779.98 is: 10,736.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,153.52 : 19,531.64 = 7,779.98 : x
  2. Step 2: Convert to fraction form
    14,153.52/19,531.64 = 7,779.98/x
  3. Step 3: Cross multiply
    14,153.52x = 19,531.64 × 7,779.98
  4. Step 4: Simplify right side
    14,153.52x = 151,955,670.91
  5. Step 5: Solve for x
    x = 151,955,670.91/14,153.52
  6. Step 6: Final answer
    x = 10,736.25

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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.