Home / 21,017.24-29,017.30-13,070.28

Finding the Fourth Proportional to 21,017.24, 29,017.30 and 13,070.28

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Solution

The fourth proportional to 21,017.24, 29,017.30 and 13,070.28 is: 18,045.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.24 : 29,017.30 = 13,070.28 : x
  2. Step 2: Convert to fraction form
    21,017.24/29,017.30 = 13,070.28/x
  3. Step 3: Cross multiply
    21,017.24x = 29,017.30 × 13,070.28
  4. Step 4: Simplify right side
    21,017.24x = 379,264,235.84
  5. Step 5: Solve for x
    x = 379,264,235.84/21,017.24
  6. Step 6: Final answer
    x = 18,045.39

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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.