Home / 15,030.90-20,742.93-8,316.63

Finding the Fourth Proportional to 15,030.90, 20,742.93 and 8,316.63

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Solution

The fourth proportional to 15,030.90, 20,742.93 and 8,316.63 is: 11,477.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.90 : 20,742.93 = 8,316.63 : x
  2. Step 2: Convert to fraction form
    15,030.90/20,742.93 = 8,316.63/x
  3. Step 3: Cross multiply
    15,030.90x = 20,742.93 × 8,316.63
  4. Step 4: Simplify right side
    15,030.90x = 172,511,273.93
  5. Step 5: Solve for x
    x = 172,511,273.93/15,030.90
  6. Step 6: Final answer
    x = 11,477.11

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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.