Home / 15,547.40-21,455.22-8,473.72

Finding the Fourth Proportional to 15,547.40, 21,455.22 and 8,473.72

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Solution

The fourth proportional to 15,547.40, 21,455.22 and 8,473.72 is: 11,693.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.40 : 21,455.22 = 8,473.72 : x
  2. Step 2: Convert to fraction form
    15,547.40/21,455.22 = 8,473.72/x
  3. Step 3: Cross multiply
    15,547.40x = 21,455.22 × 8,473.72
  4. Step 4: Simplify right side
    15,547.40x = 181,805,526.82
  5. Step 5: Solve for x
    x = 181,805,526.82/15,547.40
  6. Step 6: Final answer
    x = 11,693.63

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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.