Home / 10,887.98-15,026.00-6,638.40

Finding the Fourth Proportional to 10,887.98, 15,026.00 and 6,638.40

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Solution

The fourth proportional to 10,887.98, 15,026.00 and 6,638.40 is: 9,161.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.98 : 15,026.00 = 6,638.40 : x
  2. Step 2: Convert to fraction form
    10,887.98/15,026.00 = 6,638.40/x
  3. Step 3: Cross multiply
    10,887.98x = 15,026.00 × 6,638.40
  4. Step 4: Simplify right side
    10,887.98x = 99,748,565.21
  5. Step 5: Solve for x
    x = 99,748,565.21/10,887.98
  6. Step 6: Final answer
    x = 9,161.35

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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.