Home / 42,657.85-63,999.07-13,080.05

Finding the Fourth Proportional to 42,657.85, 63,999.07 and 13,080.05

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Solution

The fourth proportional to 42,657.85, 63,999.07 and 13,080.05 is: 19,623.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,657.85 : 63,999.07 = 13,080.05 : x
  2. Step 2: Convert to fraction form
    42,657.85/63,999.07 = 13,080.05/x
  3. Step 3: Cross multiply
    42,657.85x = 63,999.07 × 13,080.05
  4. Step 4: Simplify right side
    42,657.85x = 837,110,715.56
  5. Step 5: Solve for x
    x = 837,110,715.56/42,657.85
  6. Step 6: Final answer
    x = 19,623.84

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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.