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Finding the Fourth Proportional to 14,810.60, 22,215.90 and 13,140.20

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Solution

The fourth proportional to 14,810.60, 22,215.90 and 13,140.20 is: 19,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,810.60 : 22,215.90 = 13,140.20 : x
  2. Step 2: Convert to fraction form
    14,810.60/22,215.90 = 13,140.20/x
  3. Step 3: Cross multiply
    14,810.60x = 22,215.90 × 13,140.20
  4. Step 4: Simplify right side
    14,810.60x = 291,921,369.18
  5. Step 5: Solve for x
    x = 291,921,369.18/14,810.60
  6. Step 6: Final answer
    x = 19,710.30

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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.