Home / 14,113.70-21,158.40-7,188.20

Finding the Fourth Proportional to 14,113.70, 21,158.40 and 7,188.20

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Solution

The fourth proportional to 14,113.70, 21,158.40 and 7,188.20 is: 10,776.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,113.70 : 21,158.40 = 7,188.20 : x
  2. Step 2: Convert to fraction form
    14,113.70/21,158.40 = 7,188.20/x
  3. Step 3: Cross multiply
    14,113.70x = 21,158.40 × 7,188.20
  4. Step 4: Simplify right side
    14,113.70x = 152,090,810.88
  5. Step 5: Solve for x
    x = 152,090,810.88/14,113.70
  6. Step 6: Final answer
    x = 10,776.11

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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.