Home / 42,212.08-63,276.36-19,986.40

Finding the Fourth Proportional to 42,212.08, 63,276.36 and 19,986.40

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Solution

The fourth proportional to 42,212.08, 63,276.36 and 19,986.40 is: 29,959.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,212.08 : 63,276.36 = 19,986.40 : x
  2. Step 2: Convert to fraction form
    42,212.08/63,276.36 = 19,986.40/x
  3. Step 3: Cross multiply
    42,212.08x = 63,276.36 × 19,986.40
  4. Step 4: Simplify right side
    42,212.08x = 1,264,666,641.50
  5. Step 5: Solve for x
    x = 1,264,666,641.50/42,212.08
  6. Step 6: Final answer
    x = 29,959.83

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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.