Home / 31,581.02-47,354.12-12,856.26

Finding the Fourth Proportional to 31,581.02, 47,354.12 and 12,856.26

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Solution

The fourth proportional to 31,581.02, 47,354.12 and 12,856.26 is: 19,277.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,581.02 : 47,354.12 = 12,856.26 : x
  2. Step 2: Convert to fraction form
    31,581.02/47,354.12 = 12,856.26/x
  3. Step 3: Cross multiply
    31,581.02x = 47,354.12 × 12,856.26
  4. Step 4: Simplify right side
    31,581.02x = 608,796,878.79
  5. Step 5: Solve for x
    x = 608,796,878.79/31,581.02
  6. Step 6: Final answer
    x = 19,277.30

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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.