Home / 21,525.95-29,715.19-12,572.01

Finding the Fourth Proportional to 21,525.95, 29,715.19 and 12,572.01

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Solution

The fourth proportional to 21,525.95, 29,715.19 and 12,572.01 is: 17,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,525.95 : 29,715.19 = 12,572.01 : x
  2. Step 2: Convert to fraction form
    21,525.95/29,715.19 = 12,572.01/x
  3. Step 3: Cross multiply
    21,525.95x = 29,715.19 × 12,572.01
  4. Step 4: Simplify right side
    21,525.95x = 373,579,634.40
  5. Step 5: Solve for x
    x = 373,579,634.40/21,525.95
  6. Step 6: Final answer
    x = 17,354.85

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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.