Home / 15,810.30-23,686.65-12,872.70

Finding the Fourth Proportional to 15,810.30, 23,686.65 and 12,872.70

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Solution

The fourth proportional to 15,810.30, 23,686.65 and 12,872.70 is: 19,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,810.30 : 23,686.65 = 12,872.70 : x
  2. Step 2: Convert to fraction form
    15,810.30/23,686.65 = 12,872.70/x
  3. Step 3: Cross multiply
    15,810.30x = 23,686.65 × 12,872.70
  4. Step 4: Simplify right side
    15,810.30x = 304,911,139.46
  5. Step 5: Solve for x
    x = 304,911,139.46/15,810.30
  6. Step 6: Final answer
    x = 19,285.60

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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.