Home / 21,860.12-32,822.98-12,510.70

Finding the Fourth Proportional to 21,860.12, 32,822.98 and 12,510.70

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Solution

The fourth proportional to 21,860.12, 32,822.98 and 12,510.70 is: 18,784.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.12 : 32,822.98 = 12,510.70 : x
  2. Step 2: Convert to fraction form
    21,860.12/32,822.98 = 12,510.70/x
  3. Step 3: Cross multiply
    21,860.12x = 32,822.98 × 12,510.70
  4. Step 4: Simplify right side
    21,860.12x = 410,638,455.89
  5. Step 5: Solve for x
    x = 410,638,455.89/21,860.12
  6. Step 6: Final answer
    x = 18,784.82

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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.