Home / 15,527.72-21,427.98-8,454.02

Finding the Fourth Proportional to 15,527.72, 21,427.98 and 8,454.02

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Solution

The fourth proportional to 15,527.72, 21,427.98 and 8,454.02 is: 11,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.72 : 21,427.98 = 8,454.02 : x
  2. Step 2: Convert to fraction form
    15,527.72/21,427.98 = 8,454.02/x
  3. Step 3: Cross multiply
    15,527.72x = 21,427.98 × 8,454.02
  4. Step 4: Simplify right side
    15,527.72x = 181,152,571.48
  5. Step 5: Solve for x
    x = 181,152,571.48/15,527.72
  6. Step 6: Final answer
    x = 11,666.40

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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.