Home / 15,138.65-20,876.84-11,547.23

Finding the Fourth Proportional to 15,138.65, 20,876.84 and 11,547.23

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Solution

The fourth proportional to 15,138.65, 20,876.84 and 11,547.23 is: 15,924.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.65 : 20,876.84 = 11,547.23 : x
  2. Step 2: Convert to fraction form
    15,138.65/20,876.84 = 11,547.23/x
  3. Step 3: Cross multiply
    15,138.65x = 20,876.84 × 11,547.23
  4. Step 4: Simplify right side
    15,138.65x = 241,069,586.81
  5. Step 5: Solve for x
    x = 241,069,586.81/15,138.65
  6. Step 6: Final answer
    x = 15,924.11

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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.