Home / 22,759.67-31,408.47-12,688.74

Finding the Fourth Proportional to 22,759.67, 31,408.47 and 12,688.74

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Solution

The fourth proportional to 22,759.67, 31,408.47 and 12,688.74 is: 17,510.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,759.67 : 31,408.47 = 12,688.74 : x
  2. Step 2: Convert to fraction form
    22,759.67/31,408.47 = 12,688.74/x
  3. Step 3: Cross multiply
    22,759.67x = 31,408.47 × 12,688.74
  4. Step 4: Simplify right side
    22,759.67x = 398,533,909.63
  5. Step 5: Solve for x
    x = 398,533,909.63/22,759.67
  6. Step 6: Final answer
    x = 17,510.53

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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.