Home / 15,435.06-21,280.93-12,599.55

Finding the Fourth Proportional to 15,435.06, 21,280.93 and 12,599.55

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Solution

The fourth proportional to 15,435.06, 21,280.93 and 12,599.55 is: 17,371.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.06 : 21,280.93 = 12,599.55 : x
  2. Step 2: Convert to fraction form
    15,435.06/21,280.93 = 12,599.55/x
  3. Step 3: Cross multiply
    15,435.06x = 21,280.93 × 12,599.55
  4. Step 4: Simplify right side
    15,435.06x = 268,130,110.08
  5. Step 5: Solve for x
    x = 268,130,110.08/15,435.06
  6. Step 6: Final answer
    x = 17,371.50

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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.