Home / 15,723.95-21,698.70-9,013.53

Finding the Fourth Proportional to 15,723.95, 21,698.70 and 9,013.53

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Solution

The fourth proportional to 15,723.95, 21,698.70 and 9,013.53 is: 12,438.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723.95 : 21,698.70 = 9,013.53 : x
  2. Step 2: Convert to fraction form
    15,723.95/21,698.70 = 9,013.53/x
  3. Step 3: Cross multiply
    15,723.95x = 21,698.70 × 9,013.53
  4. Step 4: Simplify right side
    15,723.95x = 195,581,883.41
  5. Step 5: Solve for x
    x = 195,581,883.41/15,723.95
  6. Step 6: Final answer
    x = 12,438.47

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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.