Home / 15,411.04-21,267.12-12,057.28

Finding the Fourth Proportional to 15,411.04, 21,267.12 and 12,057.28

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Solution

The fourth proportional to 15,411.04, 21,267.12 and 12,057.28 is: 16,638.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.04 : 21,267.12 = 12,057.28 : x
  2. Step 2: Convert to fraction form
    15,411.04/21,267.12 = 12,057.28/x
  3. Step 3: Cross multiply
    15,411.04x = 21,267.12 × 12,057.28
  4. Step 4: Simplify right side
    15,411.04x = 256,423,620.63
  5. Step 5: Solve for x
    x = 256,423,620.63/15,411.04
  6. Step 6: Final answer
    x = 16,638.96

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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.