Home / 15,555.10-21,466.02-9,181.70

Finding the Fourth Proportional to 15,555.10, 21,466.02 and 9,181.70

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Solution

The fourth proportional to 15,555.10, 21,466.02 and 9,181.70 is: 12,670.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.10 : 21,466.02 = 9,181.70 : x
  2. Step 2: Convert to fraction form
    15,555.10/21,466.02 = 9,181.70/x
  3. Step 3: Cross multiply
    15,555.10x = 21,466.02 × 9,181.70
  4. Step 4: Simplify right side
    15,555.10x = 197,094,555.83
  5. Step 5: Solve for x
    x = 197,094,555.83/15,555.10
  6. Step 6: Final answer
    x = 12,670.74

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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.