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Finding the Fourth Proportional to 14,058.48, 21,087.98 and 7,858.08

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Solution

The fourth proportional to 14,058.48, 21,087.98 and 7,858.08 is: 11,787.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,058.48 : 21,087.98 = 7,858.08 : x
  2. Step 2: Convert to fraction form
    14,058.48/21,087.98 = 7,858.08/x
  3. Step 3: Cross multiply
    14,058.48x = 21,087.98 × 7,858.08
  4. Step 4: Simplify right side
    14,058.48x = 165,710,985.24
  5. Step 5: Solve for x
    x = 165,710,985.24/14,058.48
  6. Step 6: Final answer
    x = 11,787.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.