Home / 28,058.57-38,720.26-15,312.00

Finding the Fourth Proportional to 28,058.57, 38,720.26 and 15,312.00

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Solution

The fourth proportional to 28,058.57, 38,720.26 and 15,312.00 is: 21,130.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,058.57 : 38,720.26 = 15,312.00 : x
  2. Step 2: Convert to fraction form
    28,058.57/38,720.26 = 15,312.00/x
  3. Step 3: Cross multiply
    28,058.57x = 38,720.26 × 15,312.00
  4. Step 4: Simplify right side
    28,058.57x = 592,884,785.46
  5. Step 5: Solve for x
    x = 592,884,785.46/28,058.57
  6. Step 6: Final answer
    x = 21,130.26

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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.