Home / 13,830.65-19,085.72-7,543.02

Finding the Fourth Proportional to 13,830.65, 19,085.72 and 7,543.02

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Solution

The fourth proportional to 13,830.65, 19,085.72 and 7,543.02 is: 10,409.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.65 : 19,085.72 = 7,543.02 : x
  2. Step 2: Convert to fraction form
    13,830.65/19,085.72 = 7,543.02/x
  3. Step 3: Cross multiply
    13,830.65x = 19,085.72 × 7,543.02
  4. Step 4: Simplify right side
    13,830.65x = 143,963,967.67
  5. Step 5: Solve for x
    x = 143,963,967.67/13,830.65
  6. Step 6: Final answer
    x = 10,409.05

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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.