Home / 13,920.75-19,210.68-7,547.45

Finding the Fourth Proportional to 13,920.75, 19,210.68 and 7,547.45

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Solution

The fourth proportional to 13,920.75, 19,210.68 and 7,547.45 is: 10,415.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.75 : 19,210.68 = 7,547.45 : x
  2. Step 2: Convert to fraction form
    13,920.75/19,210.68 = 7,547.45/x
  3. Step 3: Cross multiply
    13,920.75x = 19,210.68 × 7,547.45
  4. Step 4: Simplify right side
    13,920.75x = 144,991,550.71
  5. Step 5: Solve for x
    x = 144,991,550.71/13,920.75
  6. Step 6: Final answer
    x = 10,415.50

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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.