Home / 42,390.98-63,586.74-12,808.70

Finding the Fourth Proportional to 42,390.98, 63,586.74 and 12,808.70

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Solution

The fourth proportional to 42,390.98, 63,586.74 and 12,808.70 is: 19,213.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,390.98 : 63,586.74 = 12,808.70 : x
  2. Step 2: Convert to fraction form
    42,390.98/63,586.74 = 12,808.70/x
  3. Step 3: Cross multiply
    42,390.98x = 63,586.74 × 12,808.70
  4. Step 4: Simplify right side
    42,390.98x = 814,463,476.64
  5. Step 5: Solve for x
    x = 814,463,476.64/42,390.98
  6. Step 6: Final answer
    x = 19,213.13

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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.