Home / 15,400.65-21,233.64-12,852.08

Finding the Fourth Proportional to 15,400.65, 21,233.64 and 12,852.08

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Solution

The fourth proportional to 15,400.65, 21,233.64 and 12,852.08 is: 17,719.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.65 : 21,233.64 = 12,852.08 : x
  2. Step 2: Convert to fraction form
    15,400.65/21,233.64 = 12,852.08/x
  3. Step 3: Cross multiply
    15,400.65x = 21,233.64 × 12,852.08
  4. Step 4: Simplify right side
    15,400.65x = 272,896,581.06
  5. Step 5: Solve for x
    x = 272,896,581.06/15,400.65
  6. Step 6: Final answer
    x = 17,719.81

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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.