Home / 53,965.72-80,948.58-18,915.40

Finding the Fourth Proportional to 53,965.72, 80,948.58 and 18,915.40

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Solution

The fourth proportional to 53,965.72, 80,948.58 and 18,915.40 is: 28,373.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,965.72 : 80,948.58 = 18,915.40 : x
  2. Step 2: Convert to fraction form
    53,965.72/80,948.58 = 18,915.40/x
  3. Step 3: Cross multiply
    53,965.72x = 80,948.58 × 18,915.40
  4. Step 4: Simplify right side
    53,965.72x = 1,531,174,770.13
  5. Step 5: Solve for x
    x = 1,531,174,770.13/53,965.72
  6. Step 6: Final answer
    x = 28,373.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.