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Finding the Fourth Proportional to 14,208.60, 21,312.90 and 4,347.90

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Solution

The fourth proportional to 14,208.60, 21,312.90 and 4,347.90 is: 6,521.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,208.60 : 21,312.90 = 4,347.90 : x
  2. Step 2: Convert to fraction form
    14,208.60/21,312.90 = 4,347.90/x
  3. Step 3: Cross multiply
    14,208.60x = 21,312.90 × 4,347.90
  4. Step 4: Simplify right side
    14,208.60x = 92,666,357.91
  5. Step 5: Solve for x
    x = 92,666,357.91/14,208.60
  6. Step 6: Final answer
    x = 6,521.85

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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.