Home / 11,507.19-15,880.47-7,030.20

Finding the Fourth Proportional to 11,507.19, 15,880.47 and 7,030.20

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Solution

The fourth proportional to 11,507.19, 15,880.47 and 7,030.20 is: 9,702.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,507.19 : 15,880.47 = 7,030.20 : x
  2. Step 2: Convert to fraction form
    11,507.19/15,880.47 = 7,030.20/x
  3. Step 3: Cross multiply
    11,507.19x = 15,880.47 × 7,030.20
  4. Step 4: Simplify right side
    11,507.19x = 111,642,880.19
  5. Step 5: Solve for x
    x = 111,642,880.19/11,507.19
  6. Step 6: Final answer
    x = 9,702.01

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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.