Home / 15,541.40-21,445.83-8,735.05

Finding the Fourth Proportional to 15,541.40, 21,445.83 and 8,735.05

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Solution

The fourth proportional to 15,541.40, 21,445.83 and 8,735.05 is: 12,053.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,541.40 : 21,445.83 = 8,735.05 : x
  2. Step 2: Convert to fraction form
    15,541.40/21,445.83 = 8,735.05/x
  3. Step 3: Cross multiply
    15,541.40x = 21,445.83 × 8,735.05
  4. Step 4: Simplify right side
    15,541.40x = 187,330,397.34
  5. Step 5: Solve for x
    x = 187,330,397.34/15,541.40
  6. Step 6: Final answer
    x = 12,053.64

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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.