Home / 28,411.67-42,617.72-12,612.45

Finding the Fourth Proportional to 28,411.67, 42,617.72 and 12,612.45

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Solution

The fourth proportional to 28,411.67, 42,617.72 and 12,612.45 is: 18,918.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,411.67 : 42,617.72 = 12,612.45 : x
  2. Step 2: Convert to fraction form
    28,411.67/42,617.72 = 12,612.45/x
  3. Step 3: Cross multiply
    28,411.67x = 42,617.72 × 12,612.45
  4. Step 4: Simplify right side
    28,411.67x = 537,513,846.85
  5. Step 5: Solve for x
    x = 537,513,846.85/28,411.67
  6. Step 6: Final answer
    x = 18,918.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.