Home / 30,725.65-42,312.13-26,690.64

Finding the Fourth Proportional to 30,725.65, 42,312.13 and 26,690.64

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Solution

The fourth proportional to 30,725.65, 42,312.13 and 26,690.64 is: 36,755.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,725.65 : 42,312.13 = 26,690.64 : x
  2. Step 2: Convert to fraction form
    30,725.65/42,312.13 = 26,690.64/x
  3. Step 3: Cross multiply
    30,725.65x = 42,312.13 × 26,690.64
  4. Step 4: Simplify right side
    30,725.65x = 1,129,337,829.46
  5. Step 5: Solve for x
    x = 1,129,337,829.46/30,725.65
  6. Step 6: Final answer
    x = 36,755.54

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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.