Home / 14,220.18-19,619.28-7,931.34

Finding the Fourth Proportional to 14,220.18, 19,619.28 and 7,931.34

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Solution

The fourth proportional to 14,220.18, 19,619.28 and 7,931.34 is: 10,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220.18 : 19,619.28 = 7,931.34 : x
  2. Step 2: Convert to fraction form
    14,220.18/19,619.28 = 7,931.34/x
  3. Step 3: Cross multiply
    14,220.18x = 19,619.28 × 7,931.34
  4. Step 4: Simplify right side
    14,220.18x = 155,607,180.24
  5. Step 5: Solve for x
    x = 155,607,180.24/14,220.18
  6. Step 6: Final answer
    x = 10,942.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.