Home / 15,535.08-21,438.72-8,461.80

Finding the Fourth Proportional to 15,535.08, 21,438.72 and 8,461.80

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Solution

The fourth proportional to 15,535.08, 21,438.72 and 8,461.80 is: 11,677.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.08 : 21,438.72 = 8,461.80 : x
  2. Step 2: Convert to fraction form
    15,535.08/21,438.72 = 8,461.80/x
  3. Step 3: Cross multiply
    15,535.08x = 21,438.72 × 8,461.80
  4. Step 4: Simplify right side
    15,535.08x = 181,410,160.90
  5. Step 5: Solve for x
    x = 181,410,160.90/15,535.08
  6. Step 6: Final answer
    x = 11,677.45

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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.