Home / 42,672.90-64,017.56-13,085.56

Finding the Fourth Proportional to 42,672.90, 64,017.56 and 13,085.56

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Solution

The fourth proportional to 42,672.90, 64,017.56 and 13,085.56 is: 19,630.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,672.90 : 64,017.56 = 13,085.56 : x
  2. Step 2: Convert to fraction form
    42,672.90/64,017.56 = 13,085.56/x
  3. Step 3: Cross multiply
    42,672.90x = 64,017.56 × 13,085.56
  4. Step 4: Simplify right side
    42,672.90x = 837,705,622.43
  5. Step 5: Solve for x
    x = 837,705,622.43/42,672.90
  6. Step 6: Final answer
    x = 19,630.86

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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.