Home / 21,528.48-29,698.47-18,692.01

Finding the Fourth Proportional to 21,528.48, 29,698.47 and 18,692.01

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Solution

The fourth proportional to 21,528.48, 29,698.47 and 18,692.01 is: 25,785.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,528.48 : 29,698.47 = 18,692.01 : x
  2. Step 2: Convert to fraction form
    21,528.48/29,698.47 = 18,692.01/x
  3. Step 3: Cross multiply
    21,528.48x = 29,698.47 × 18,692.01
  4. Step 4: Simplify right side
    21,528.48x = 555,124,098.22
  5. Step 5: Solve for x
    x = 555,124,098.22/21,528.48
  6. Step 6: Final answer
    x = 25,785.57

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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.