Home / 15,430.50-21,295.00-8,715.95

Finding the Fourth Proportional to 15,430.50, 21,295.00 and 8,715.95

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Solution

The fourth proportional to 15,430.50, 21,295.00 and 8,715.95 is: 12,028.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.50 : 21,295.00 = 8,715.95 : x
  2. Step 2: Convert to fraction form
    15,430.50/21,295.00 = 8,715.95/x
  3. Step 3: Cross multiply
    15,430.50x = 21,295.00 × 8,715.95
  4. Step 4: Simplify right side
    15,430.50x = 185,606,259.31
  5. Step 5: Solve for x
    x = 185,606,259.31/15,430.50
  6. Step 6: Final answer
    x = 12,028.53

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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.