Home / 42,381.56-63,570.81-12,798.64

Finding the Fourth Proportional to 42,381.56, 63,570.81 and 12,798.64

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Solution

The fourth proportional to 42,381.56, 63,570.81 and 12,798.64 is: 19,197.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,381.56 : 63,570.81 = 12,798.64 : x
  2. Step 2: Convert to fraction form
    42,381.56/63,570.81 = 12,798.64/x
  3. Step 3: Cross multiply
    42,381.56x = 63,570.81 × 12,798.64
  4. Step 4: Simplify right side
    42,381.56x = 813,619,967.16
  5. Step 5: Solve for x
    x = 813,619,967.16/42,381.56
  6. Step 6: Final answer
    x = 19,197.50

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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.