Home / 39,969.12-59,955.84-10,386.16

Finding the Fourth Proportional to 39,969.12, 59,955.84 and 10,386.16

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Solution

The fourth proportional to 39,969.12, 59,955.84 and 10,386.16 is: 15,579.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,969.12 : 59,955.84 = 10,386.16 : x
  2. Step 2: Convert to fraction form
    39,969.12/59,955.84 = 10,386.16/x
  3. Step 3: Cross multiply
    39,969.12x = 59,955.84 × 10,386.16
  4. Step 4: Simplify right side
    39,969.12x = 622,710,947.17
  5. Step 5: Solve for x
    x = 622,710,947.17/39,969.12
  6. Step 6: Final answer
    x = 15,579.80

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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.