Home / 12,113.18-18,159.54-4,722.80

Finding the Fourth Proportional to 12,113.18, 18,159.54 and 4,722.80

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Solution

The fourth proportional to 12,113.18, 18,159.54 and 4,722.80 is: 7,080.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113.18 : 18,159.54 = 4,722.80 : x
  2. Step 2: Convert to fraction form
    12,113.18/18,159.54 = 4,722.80/x
  3. Step 3: Cross multiply
    12,113.18x = 18,159.54 × 4,722.80
  4. Step 4: Simplify right side
    12,113.18x = 85,763,875.51
  5. Step 5: Solve for x
    x = 85,763,875.51/12,113.18
  6. Step 6: Final answer
    x = 7,080.21

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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.