Home / 14,280.20-21,410.70-7,617.80

Finding the Fourth Proportional to 14,280.20, 21,410.70 and 7,617.80

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Solution

The fourth proportional to 14,280.20, 21,410.70 and 7,617.80 is: 11,421.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.20 : 21,410.70 = 7,617.80 : x
  2. Step 2: Convert to fraction form
    14,280.20/21,410.70 = 7,617.80/x
  3. Step 3: Cross multiply
    14,280.20x = 21,410.70 × 7,617.80
  4. Step 4: Simplify right side
    14,280.20x = 163,102,430.46
  5. Step 5: Solve for x
    x = 163,102,430.46/14,280.20
  6. Step 6: Final answer
    x = 11,421.58

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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.