Home / 25,643.49-35,335.47-18,918.45

Finding the Fourth Proportional to 25,643.49, 35,335.47 and 18,918.45

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Solution

The fourth proportional to 25,643.49, 35,335.47 and 18,918.45 is: 26,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,643.49 : 35,335.47 = 18,918.45 : x
  2. Step 2: Convert to fraction form
    25,643.49/35,335.47 = 18,918.45/x
  3. Step 3: Cross multiply
    25,643.49x = 35,335.47 × 18,918.45
  4. Step 4: Simplify right side
    25,643.49x = 668,492,322.42
  5. Step 5: Solve for x
    x = 668,492,322.42/25,643.49
  6. Step 6: Final answer
    x = 26,068.70

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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.