Home / 21,501.76-29,670.40-12,068.48

Finding the Fourth Proportional to 21,501.76, 29,670.40 and 12,068.48

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Solution

The fourth proportional to 21,501.76, 29,670.40 and 12,068.48 is: 16,653.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,501.76 : 29,670.40 = 12,068.48 : x
  2. Step 2: Convert to fraction form
    21,501.76/29,670.40 = 12,068.48/x
  3. Step 3: Cross multiply
    21,501.76x = 29,670.40 × 12,068.48
  4. Step 4: Simplify right side
    21,501.76x = 358,076,628.99
  5. Step 5: Solve for x
    x = 358,076,628.99/21,501.76
  6. Step 6: Final answer
    x = 16,653.36

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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.