Home / 42,567.79-63,861.69-12,985.63

Finding the Fourth Proportional to 42,567.79, 63,861.69 and 12,985.63

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Solution

The fourth proportional to 42,567.79, 63,861.69 and 12,985.63 is: 19,481.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,567.79 : 63,861.69 = 12,985.63 : x
  2. Step 2: Convert to fraction form
    42,567.79/63,861.69 = 12,985.63/x
  3. Step 3: Cross multiply
    42,567.79x = 63,861.69 × 12,985.63
  4. Step 4: Simplify right side
    42,567.79x = 829,284,277.51
  5. Step 5: Solve for x
    x = 829,284,277.51/42,567.79
  6. Step 6: Final answer
    x = 19,481.50

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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.