Home / 11,555.28-15,931.71-7,570.08

Finding the Fourth Proportional to 11,555.28, 15,931.71 and 7,570.08

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Solution

The fourth proportional to 11,555.28, 15,931.71 and 7,570.08 is: 10,437.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.28 : 15,931.71 = 7,570.08 : x
  2. Step 2: Convert to fraction form
    11,555.28/15,931.71 = 7,570.08/x
  3. Step 3: Cross multiply
    11,555.28x = 15,931.71 × 7,570.08
  4. Step 4: Simplify right side
    11,555.28x = 120,604,319.24
  5. Step 5: Solve for x
    x = 120,604,319.24/11,555.28
  6. Step 6: Final answer
    x = 10,437.16

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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.