Home / 43,265.10-64,904.40-13,680.12

Finding the Fourth Proportional to 43,265.10, 64,904.40 and 13,680.12

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Solution

The fourth proportional to 43,265.10, 64,904.40 and 13,680.12 is: 20,522.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,265.10 : 64,904.40 = 13,680.12 : x
  2. Step 2: Convert to fraction form
    43,265.10/64,904.40 = 13,680.12/x
  3. Step 3: Cross multiply
    43,265.10x = 64,904.40 × 13,680.12
  4. Step 4: Simplify right side
    43,265.10x = 887,899,980.53
  5. Step 5: Solve for x
    x = 887,899,980.53/43,265.10
  6. Step 6: Final answer
    x = 20,522.31

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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.