Home / 20,526.63-28,311.79-15,692.28

Finding the Fourth Proportional to 20,526.63, 28,311.79 and 15,692.28

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Solution

The fourth proportional to 20,526.63, 28,311.79 and 15,692.28 is: 21,643.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,526.63 : 28,311.79 = 15,692.28 : x
  2. Step 2: Convert to fraction form
    20,526.63/28,311.79 = 15,692.28/x
  3. Step 3: Cross multiply
    20,526.63x = 28,311.79 × 15,692.28
  4. Step 4: Simplify right side
    20,526.63x = 444,276,457.52
  5. Step 5: Solve for x
    x = 444,276,457.52/20,526.63
  6. Step 6: Final answer
    x = 21,643.91

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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.