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Finding the Fourth Proportional to 25,891,409.60, 38,848,000.80 and 13,910,148.80

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Solution

The fourth proportional to 25,891,409.60, 38,848,000.80 and 13,910,148.80 is: 20,871,071.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,891,409.60 : 38,848,000.80 = 13,910,148.80 : x
  2. Step 2: Convert to fraction form
    25,891,409.60/38,848,000.80 = 13,910,148.80/x
  3. Step 3: Cross multiply
    25,891,409.60x = 38,848,000.80 × 13,910,148.80
  4. Step 4: Simplify right side
    25,891,409.60x = 540,381,471,710,519
  5. Step 5: Solve for x
    x = 540,381,471,710,519/25,891,409.60
  6. Step 6: Final answer
    x = 20,871,071.91

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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.