Home / 21,715.64-32,578.25-12,360.07

Finding the Fourth Proportional to 21,715.64, 32,578.25 and 12,360.07

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Solution

The fourth proportional to 21,715.64, 32,578.25 and 12,360.07 is: 18,542.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.64 : 32,578.25 = 12,360.07 : x
  2. Step 2: Convert to fraction form
    21,715.64/32,578.25 = 12,360.07/x
  3. Step 3: Cross multiply
    21,715.64x = 32,578.25 × 12,360.07
  4. Step 4: Simplify right side
    21,715.64x = 402,669,225.79
  5. Step 5: Solve for x
    x = 402,669,225.79/21,715.64
  6. Step 6: Final answer
    x = 18,542.82

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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.