Home / 31,117.91-42,941.25-19,038.48

Finding the Fourth Proportional to 31,117.91, 42,941.25 and 19,038.48

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Solution

The fourth proportional to 31,117.91, 42,941.25 and 19,038.48 is: 26,272.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,117.91 : 42,941.25 = 19,038.48 : x
  2. Step 2: Convert to fraction form
    31,117.91/42,941.25 = 19,038.48/x
  3. Step 3: Cross multiply
    31,117.91x = 42,941.25 × 19,038.48
  4. Step 4: Simplify right side
    31,117.91x = 817,536,129.30
  5. Step 5: Solve for x
    x = 817,536,129.30/31,117.91
  6. Step 6: Final answer
    x = 26,272.21

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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.