Home / 14,220.24-21,278.28-12,509.52

Finding the Fourth Proportional to 14,220.24, 21,278.28 and 12,509.52

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Solution

The fourth proportional to 14,220.24, 21,278.28 and 12,509.52 is: 18,718.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220.24 : 21,278.28 = 12,509.52 : x
  2. Step 2: Convert to fraction form
    14,220.24/21,278.28 = 12,509.52/x
  3. Step 3: Cross multiply
    14,220.24x = 21,278.28 × 12,509.52
  4. Step 4: Simplify right side
    14,220.24x = 266,181,069.23
  5. Step 5: Solve for x
    x = 266,181,069.23/14,220.24
  6. Step 6: Final answer
    x = 18,718.47

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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.