Home / 42,573.10-63,859.47-12,990.85

Finding the Fourth Proportional to 42,573.10, 63,859.47 and 12,990.85

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Solution

The fourth proportional to 42,573.10, 63,859.47 and 12,990.85 is: 19,486.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,573.10 : 63,859.47 = 12,990.85 : x
  2. Step 2: Convert to fraction form
    42,573.10/63,859.47 = 12,990.85/x
  3. Step 3: Cross multiply
    42,573.10x = 63,859.47 × 12,990.85
  4. Step 4: Simplify right side
    42,573.10x = 829,588,795.85
  5. Step 5: Solve for x
    x = 829,588,795.85/42,573.10
  6. Step 6: Final answer
    x = 19,486.22

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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.