Home / 15,730.03-21,707.76-8,656.47

Finding the Fourth Proportional to 15,730.03, 21,707.76 and 8,656.47

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Solution

The fourth proportional to 15,730.03, 21,707.76 and 8,656.47 is: 11,946.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.03 : 21,707.76 = 8,656.47 : x
  2. Step 2: Convert to fraction form
    15,730.03/21,707.76 = 8,656.47/x
  3. Step 3: Cross multiply
    15,730.03x = 21,707.76 × 8,656.47
  4. Step 4: Simplify right side
    15,730.03x = 187,912,605.67
  5. Step 5: Solve for x
    x = 187,912,605.67/15,730.03
  6. Step 6: Final answer
    x = 11,946.11

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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.