Home / 31,856.08-47,764.68-13,130.32

Finding the Fourth Proportional to 31,856.08, 47,764.68 and 13,130.32

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Solution

The fourth proportional to 31,856.08, 47,764.68 and 13,130.32 is: 19,687.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,856.08 : 47,764.68 = 13,130.32 : x
  2. Step 2: Convert to fraction form
    31,856.08/47,764.68 = 13,130.32/x
  3. Step 3: Cross multiply
    31,856.08x = 47,764.68 × 13,130.32
  4. Step 4: Simplify right side
    31,856.08x = 627,165,533.10
  5. Step 5: Solve for x
    x = 627,165,533.10/31,856.08
  6. Step 6: Final answer
    x = 19,687.47

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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.