Home / 15,263.12-21,069.48-12,917.36

Finding the Fourth Proportional to 15,263.12, 21,069.48 and 12,917.36

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Solution

The fourth proportional to 15,263.12, 21,069.48 and 12,917.36 is: 17,831.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,263.12 : 21,069.48 = 12,917.36 : x
  2. Step 2: Convert to fraction form
    15,263.12/21,069.48 = 12,917.36/x
  3. Step 3: Cross multiply
    15,263.12x = 21,069.48 × 12,917.36
  4. Step 4: Simplify right side
    15,263.12x = 272,162,058.17
  5. Step 5: Solve for x
    x = 272,162,058.17/15,263.12
  6. Step 6: Final answer
    x = 17,831.35

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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.