Home / 15,387.36-23,031.75-7,981.66

Finding the Fourth Proportional to 15,387.36, 23,031.75 and 7,981.66

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Solution

The fourth proportional to 15,387.36, 23,031.75 and 7,981.66 is: 11,946.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.36 : 23,031.75 = 7,981.66 : x
  2. Step 2: Convert to fraction form
    15,387.36/23,031.75 = 7,981.66/x
  3. Step 3: Cross multiply
    15,387.36x = 23,031.75 × 7,981.66
  4. Step 4: Simplify right side
    15,387.36x = 183,831,597.71
  5. Step 5: Solve for x
    x = 183,831,597.71/15,387.36
  6. Step 6: Final answer
    x = 11,946.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.