Home / 31,271.32-47,126.68-28,154.86

Finding the Fourth Proportional to 31,271.32, 47,126.68 and 28,154.86

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Solution

The fourth proportional to 31,271.32, 47,126.68 and 28,154.86 is: 42,430.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,271.32 : 47,126.68 = 28,154.86 : x
  2. Step 2: Convert to fraction form
    31,271.32/47,126.68 = 28,154.86/x
  3. Step 3: Cross multiply
    31,271.32x = 47,126.68 × 28,154.86
  4. Step 4: Simplify right side
    31,271.32x = 1,326,845,077.66
  5. Step 5: Solve for x
    x = 1,326,845,077.66/31,271.32
  6. Step 6: Final answer
    x = 42,430.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.