Home / 21,500.34-32,075.91-20,337.78

Finding the Fourth Proportional to 21,500.34, 32,075.91 and 20,337.78

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Solution

The fourth proportional to 21,500.34, 32,075.91 and 20,337.78 is: 30,341.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,500.34 : 32,075.91 = 20,337.78 : x
  2. Step 2: Convert to fraction form
    21,500.34/32,075.91 = 20,337.78/x
  3. Step 3: Cross multiply
    21,500.34x = 32,075.91 × 20,337.78
  4. Step 4: Simplify right side
    21,500.34x = 652,352,800.88
  5. Step 5: Solve for x
    x = 652,352,800.88/21,500.34
  6. Step 6: Final answer
    x = 30,341.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.