Home / 21,415.88-32,085.65-18,263.90

Finding the Fourth Proportional to 21,415.88, 32,085.65 and 18,263.90

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Solution

The fourth proportional to 21,415.88, 32,085.65 and 18,263.90 is: 27,363.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.88 : 32,085.65 = 18,263.90 : x
  2. Step 2: Convert to fraction form
    21,415.88/32,085.65 = 18,263.90/x
  3. Step 3: Cross multiply
    21,415.88x = 32,085.65 × 18,263.90
  4. Step 4: Simplify right side
    21,415.88x = 586,009,228.91
  5. Step 5: Solve for x
    x = 586,009,228.91/21,415.88
  6. Step 6: Final answer
    x = 27,363.31

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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.