Home / 15,360.72-21,197.61-8,646.36

Finding the Fourth Proportional to 15,360.72, 21,197.61 and 8,646.36

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Solution

The fourth proportional to 15,360.72, 21,197.61 and 8,646.36 is: 11,931.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360.72 : 21,197.61 = 8,646.36 : x
  2. Step 2: Convert to fraction form
    15,360.72/21,197.61 = 8,646.36/x
  3. Step 3: Cross multiply
    15,360.72x = 21,197.61 × 8,646.36
  4. Step 4: Simplify right side
    15,360.72x = 183,282,167.20
  5. Step 5: Solve for x
    x = 183,282,167.20/15,360.72
  6. Step 6: Final answer
    x = 11,931.87

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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.