Home / 42,612.72-63,918.73-12,628.95

Finding the Fourth Proportional to 42,612.72, 63,918.73 and 12,628.95

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Solution

The fourth proportional to 42,612.72, 63,918.73 and 12,628.95 is: 18,943.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,612.72 : 63,918.73 = 12,628.95 : x
  2. Step 2: Convert to fraction form
    42,612.72/63,918.73 = 12,628.95/x
  3. Step 3: Cross multiply
    42,612.72x = 63,918.73 × 12,628.95
  4. Step 4: Simplify right side
    42,612.72x = 807,226,445.23
  5. Step 5: Solve for x
    x = 807,226,445.23/42,612.72
  6. Step 6: Final answer
    x = 18,943.32

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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.