Home / 10,856.16-14,985.36-6,605.28

Finding the Fourth Proportional to 10,856.16, 14,985.36 and 6,605.28

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Solution

The fourth proportional to 10,856.16, 14,985.36 and 6,605.28 is: 9,117.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,856.16 : 14,985.36 = 6,605.28 : x
  2. Step 2: Convert to fraction form
    10,856.16/14,985.36 = 6,605.28/x
  3. Step 3: Cross multiply
    10,856.16x = 14,985.36 × 6,605.28
  4. Step 4: Simplify right side
    10,856.16x = 98,982,498.70
  5. Step 5: Solve for x
    x = 98,982,498.70/10,856.16
  6. Step 6: Final answer
    x = 9,117.63

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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.