Home / 14,280.40-21,424.98-6,389.56

Finding the Fourth Proportional to 14,280.40, 21,424.98 and 6,389.56

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Solution

The fourth proportional to 14,280.40, 21,424.98 and 6,389.56 is: 9,586.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.40 : 21,424.98 = 6,389.56 : x
  2. Step 2: Convert to fraction form
    14,280.40/21,424.98 = 6,389.56/x
  3. Step 3: Cross multiply
    14,280.40x = 21,424.98 × 6,389.56
  4. Step 4: Simplify right side
    14,280.40x = 136,896,167.72
  5. Step 5: Solve for x
    x = 136,896,167.72/14,280.40
  6. Step 6: Final answer
    x = 9,586.30

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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.