Home / 42,357.40-63,548.79-12,776.20

Finding the Fourth Proportional to 42,357.40, 63,548.79 and 12,776.20

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Solution

The fourth proportional to 42,357.40, 63,548.79 and 12,776.20 is: 19,168.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,357.40 : 63,548.79 = 12,776.20 : x
  2. Step 2: Convert to fraction form
    42,357.40/63,548.79 = 12,776.20/x
  3. Step 3: Cross multiply
    42,357.40x = 63,548.79 × 12,776.20
  4. Step 4: Simplify right side
    42,357.40x = 811,912,050.80
  5. Step 5: Solve for x
    x = 811,912,050.80/42,357.40
  6. Step 6: Final answer
    x = 19,168.13

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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.