Home / 15,864.71-21,875.59-10,831.57

Finding the Fourth Proportional to 15,864.71, 21,875.59 and 10,831.57

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Solution

The fourth proportional to 15,864.71, 21,875.59 and 10,831.57 is: 14,935.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,864.71 : 21,875.59 = 10,831.57 : x
  2. Step 2: Convert to fraction form
    15,864.71/21,875.59 = 10,831.57/x
  3. Step 3: Cross multiply
    15,864.71x = 21,875.59 × 10,831.57
  4. Step 4: Simplify right side
    15,864.71x = 236,946,902.61
  5. Step 5: Solve for x
    x = 236,946,902.61/15,864.71
  6. Step 6: Final answer
    x = 14,935.47

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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.