Home / 15,891.85-21,886.36-15,547.47

Finding the Fourth Proportional to 15,891.85, 21,886.36 and 15,547.47

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Solution

The fourth proportional to 15,891.85, 21,886.36 and 15,547.47 is: 21,412.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.85 : 21,886.36 = 15,547.47 : x
  2. Step 2: Convert to fraction form
    15,891.85/21,886.36 = 15,547.47/x
  3. Step 3: Cross multiply
    15,891.85x = 21,886.36 × 15,547.47
  4. Step 4: Simplify right side
    15,891.85x = 340,277,525.51
  5. Step 5: Solve for x
    x = 340,277,525.51/15,891.85
  6. Step 6: Final answer
    x = 21,412.08

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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.