Home / 42,455.10-63,666.45-12,863.10

Finding the Fourth Proportional to 42,455.10, 63,666.45 and 12,863.10

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Solution

The fourth proportional to 42,455.10, 63,666.45 and 12,863.10 is: 19,289.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,455.10 : 63,666.45 = 12,863.10 : x
  2. Step 2: Convert to fraction form
    42,455.10/63,666.45 = 12,863.10/x
  3. Step 3: Cross multiply
    42,455.10x = 63,666.45 × 12,863.10
  4. Step 4: Simplify right side
    42,455.10x = 818,947,913.00
  5. Step 5: Solve for x
    x = 818,947,913.00/42,455.10
  6. Step 6: Final answer
    x = 19,289.74

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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.