Home / 15,587.52-21,515.88-11,113.08

Finding the Fourth Proportional to 15,587.52, 21,515.88 and 11,113.08

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Solution

The fourth proportional to 15,587.52, 21,515.88 and 11,113.08 is: 15,339.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,587.52 : 21,515.88 = 11,113.08 : x
  2. Step 2: Convert to fraction form
    15,587.52/21,515.88 = 11,113.08/x
  3. Step 3: Cross multiply
    15,587.52x = 21,515.88 × 11,113.08
  4. Step 4: Simplify right side
    15,587.52x = 239,107,695.71
  5. Step 5: Solve for x
    x = 239,107,695.71/15,587.52
  6. Step 6: Final answer
    x = 15,339.69

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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.