Home / 18,890.16-26,068.56-11,820.60

Finding the Fourth Proportional to 18,890.16, 26,068.56 and 11,820.60

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Solution

The fourth proportional to 18,890.16, 26,068.56 and 11,820.60 is: 16,312.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.16 : 26,068.56 = 11,820.60 : x
  2. Step 2: Convert to fraction form
    18,890.16/26,068.56 = 11,820.60/x
  3. Step 3: Cross multiply
    18,890.16x = 26,068.56 × 11,820.60
  4. Step 4: Simplify right side
    18,890.16x = 308,146,020.34
  5. Step 5: Solve for x
    x = 308,146,020.34/18,890.16
  6. Step 6: Final answer
    x = 16,312.52

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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.