Home / 15,555.10-21,465.93-8,840.20

Finding the Fourth Proportional to 15,555.10, 21,465.93 and 8,840.20

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Solution

The fourth proportional to 15,555.10, 21,465.93 and 8,840.20 is: 12,199.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.10 : 21,465.93 = 8,840.20 : x
  2. Step 2: Convert to fraction form
    15,555.10/21,465.93 = 8,840.20/x
  3. Step 3: Cross multiply
    15,555.10x = 21,465.93 × 8,840.20
  4. Step 4: Simplify right side
    15,555.10x = 189,763,114.39
  5. Step 5: Solve for x
    x = 189,763,114.39/15,555.10
  6. Step 6: Final answer
    x = 12,199.41

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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.