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Finding the Fourth Proportional to 19,953.06, 29,929.40 and 7,641.06

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Solution

The fourth proportional to 19,953.06, 29,929.40 and 7,641.06 is: 11,461.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.06 : 29,929.40 = 7,641.06 : x
  2. Step 2: Convert to fraction form
    19,953.06/29,929.40 = 7,641.06/x
  3. Step 3: Cross multiply
    19,953.06x = 29,929.40 × 7,641.06
  4. Step 4: Simplify right side
    19,953.06x = 228,692,341.16
  5. Step 5: Solve for x
    x = 228,692,341.16/19,953.06
  6. Step 6: Final answer
    x = 11,461.52

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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.