Home / 14,148.70-21,210.90-7,223.20

Finding the Fourth Proportional to 14,148.70, 21,210.90 and 7,223.20

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Solution

The fourth proportional to 14,148.70, 21,210.90 and 7,223.20 is: 10,828.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,148.70 : 21,210.90 = 7,223.20 : x
  2. Step 2: Convert to fraction form
    14,148.70/21,210.90 = 7,223.20/x
  3. Step 3: Cross multiply
    14,148.70x = 21,210.90 × 7,223.20
  4. Step 4: Simplify right side
    14,148.70x = 153,210,572.88
  5. Step 5: Solve for x
    x = 153,210,572.88/14,148.70
  6. Step 6: Final answer
    x = 10,828.60

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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.