Home / 21,555.99-29,752.52-20,316.69

Finding the Fourth Proportional to 21,555.99, 29,752.52 and 20,316.69

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Solution

The fourth proportional to 21,555.99, 29,752.52 and 20,316.69 is: 28,041.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.99 : 29,752.52 = 20,316.69 : x
  2. Step 2: Convert to fraction form
    21,555.99/29,752.52 = 20,316.69/x
  3. Step 3: Cross multiply
    21,555.99x = 29,752.52 × 20,316.69
  4. Step 4: Simplify right side
    21,555.99x = 604,472,623.98
  5. Step 5: Solve for x
    x = 604,472,623.98/21,555.99
  6. Step 6: Final answer
    x = 28,041.98

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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.