Home / 30,915.51-42,663.65-16,768.35

Finding the Fourth Proportional to 30,915.51, 42,663.65 and 16,768.35

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Solution

The fourth proportional to 30,915.51, 42,663.65 and 16,768.35 is: 23,140.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,915.51 : 42,663.65 = 16,768.35 : x
  2. Step 2: Convert to fraction form
    30,915.51/42,663.65 = 16,768.35/x
  3. Step 3: Cross multiply
    30,915.51x = 42,663.65 × 16,768.35
  4. Step 4: Simplify right side
    30,915.51x = 715,398,931.64
  5. Step 5: Solve for x
    x = 715,398,931.64/30,915.51
  6. Step 6: Final answer
    x = 23,140.45

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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.