Home / 14,266.32-21,420.25-10,128.30

Finding the Fourth Proportional to 14,266.32, 21,420.25 and 10,128.30

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Solution

The fourth proportional to 14,266.32, 21,420.25 and 10,128.30 is: 15,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,266.32 : 21,420.25 = 10,128.30 : x
  2. Step 2: Convert to fraction form
    14,266.32/21,420.25 = 10,128.30/x
  3. Step 3: Cross multiply
    14,266.32x = 21,420.25 × 10,128.30
  4. Step 4: Simplify right side
    14,266.32x = 216,950,718.08
  5. Step 5: Solve for x
    x = 216,950,718.08/14,266.32
  6. Step 6: Final answer
    x = 15,207.20

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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.