Home / 10,639.17-15,955.65-7,127.01

Finding the Fourth Proportional to 10,639.17, 15,955.65 and 7,127.01

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Solution

The fourth proportional to 10,639.17, 15,955.65 and 7,127.01 is: 10,688.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.17 : 15,955.65 = 7,127.01 : x
  2. Step 2: Convert to fraction form
    10,639.17/15,955.65 = 7,127.01/x
  3. Step 3: Cross multiply
    10,639.17x = 15,955.65 × 7,127.01
  4. Step 4: Simplify right side
    10,639.17x = 113,716,077.11
  5. Step 5: Solve for x
    x = 113,716,077.11/10,639.17
  6. Step 6: Final answer
    x = 10,688.44

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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.