Home / 31,445.08-47,154.93-12,721.66

Finding the Fourth Proportional to 31,445.08, 47,154.93 and 12,721.66

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Solution

The fourth proportional to 31,445.08, 47,154.93 and 12,721.66 is: 19,077.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,445.08 : 47,154.93 = 12,721.66 : x
  2. Step 2: Convert to fraction form
    31,445.08/47,154.93 = 12,721.66/x
  3. Step 3: Cross multiply
    31,445.08x = 47,154.93 × 12,721.66
  4. Step 4: Simplify right side
    31,445.08x = 599,888,986.78
  5. Step 5: Solve for x
    x = 599,888,986.78/31,445.08
  6. Step 6: Final answer
    x = 19,077.36

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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.