Home / 15,582.30-21,505.41-8,870.10

Finding the Fourth Proportional to 15,582.30, 21,505.41 and 8,870.10

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Solution

The fourth proportional to 15,582.30, 21,505.41 and 8,870.10 is: 12,241.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,582.30 : 21,505.41 = 8,870.10 : x
  2. Step 2: Convert to fraction form
    15,582.30/21,505.41 = 8,870.10/x
  3. Step 3: Cross multiply
    15,582.30x = 21,505.41 × 8,870.10
  4. Step 4: Simplify right side
    15,582.30x = 190,755,137.24
  5. Step 5: Solve for x
    x = 190,755,137.24/15,582.30
  6. Step 6: Final answer
    x = 12,241.78

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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.