Home / 31,457.91-43,395.38-18,702.02

Finding the Fourth Proportional to 31,457.91, 43,395.38 and 18,702.02

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Solution

The fourth proportional to 31,457.91, 43,395.38 and 18,702.02 is: 25,798.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,457.91 : 43,395.38 = 18,702.02 : x
  2. Step 2: Convert to fraction form
    31,457.91/43,395.38 = 18,702.02/x
  3. Step 3: Cross multiply
    31,457.91x = 43,395.38 × 18,702.02
  4. Step 4: Simplify right side
    31,457.91x = 811,581,264.67
  5. Step 5: Solve for x
    x = 811,581,264.67/31,457.91
  6. Step 6: Final answer
    x = 25,798.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.