Home / 12,877.89-19,312.71-6,637.08

Finding the Fourth Proportional to 12,877.89, 19,312.71 and 6,637.08

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Solution

The fourth proportional to 12,877.89, 19,312.71 and 6,637.08 is: 9,953.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,877.89 : 19,312.71 = 6,637.08 : x
  2. Step 2: Convert to fraction form
    12,877.89/19,312.71 = 6,637.08/x
  3. Step 3: Cross multiply
    12,877.89x = 19,312.71 × 6,637.08
  4. Step 4: Simplify right side
    12,877.89x = 128,180,001.29
  5. Step 5: Solve for x
    x = 128,180,001.29/12,877.89
  6. Step 6: Final answer
    x = 9,953.49

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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.