Home / 13,130.07-19,718.60-12,601.55

Finding the Fourth Proportional to 13,130.07, 19,718.60 and 12,601.55

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Solution

The fourth proportional to 13,130.07, 19,718.60 and 12,601.55 is: 18,924.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.07 : 19,718.60 = 12,601.55 : x
  2. Step 2: Convert to fraction form
    13,130.07/19,718.60 = 12,601.55/x
  3. Step 3: Cross multiply
    13,130.07x = 19,718.60 × 12,601.55
  4. Step 4: Simplify right side
    13,130.07x = 248,484,762.23
  5. Step 5: Solve for x
    x = 248,484,762.23/13,130.07
  6. Step 6: Final answer
    x = 18,924.86

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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.