Home / 23,130.61-31,920.45-12,520.46

Finding the Fourth Proportional to 23,130.61, 31,920.45 and 12,520.46

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Solution

The fourth proportional to 23,130.61, 31,920.45 and 12,520.46 is: 17,278.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,130.61 : 31,920.45 = 12,520.46 : x
  2. Step 2: Convert to fraction form
    23,130.61/31,920.45 = 12,520.46/x
  3. Step 3: Cross multiply
    23,130.61x = 31,920.45 × 12,520.46
  4. Step 4: Simplify right side
    23,130.61x = 399,658,717.41
  5. Step 5: Solve for x
    x = 399,658,717.41/23,130.61
  6. Step 6: Final answer
    x = 17,278.35

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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.